Category Archives: Firearms Building and Gunsmithing

How to build and/or gunsmith on certain platforms.

How To Find Barrels For Your Polymer80 Build on eBay

In my last few posts, I’ve covered OEM lower parts kits and customizing the parts in the lower. In this post, I’m going to switch to the slide area and cover barrels. Without a doubt, having the right barrel for what you want to do is a very important consideration. Now notice how I worded that – it depends on what you want to do. There are barrel built for reliability, with match tolerances, porting, threaded ends, extended barrels… it really depends on what you want.

When I built my first two Polymer80 pistols – a full size Glock 17 unit and a full size 34, I went with threaded match barrels from 80P Builder. They are both accurate with 115 and 124gr FMJ but I quickly realized the added length wasn’t really worth it for me at this point. The idea behind a threaded barrel is that it will allow you to thread on some type of suppressor or muzzle device. To do that, the barrel with the threading needs to stick out – in the case of the 17, it sticks out about 0.634″ inches.

The threaded barrel extends 0.634″ past the end of the slide in this Model 17 build.

You have to ask yourself – do you really need that sticking out if you want a pistol for concealed carry. With my 34, it is a combat pistol and length isn’t something I worry about. In fact, it is running a Tyrant Designs CNC T-Comp brake that does a remarkable job of keeping the pistol flat during rapid fire. The end of the day, the threading definitely gives you a ton of options with a little extra length and weight added.

The Tyrant CNC brake is both radical looking and effective. It’s found a permanent home on my first Polymer80 Model 34 build. You can see a hint of the front Tru Glo TFX Pro sight as well.

If you like the idea of reducing muzzle rise and some recoil reduction, another option for you is a ported barrel where the manufacturer of the barrel actually will either drill holes or machine slots into the end of the barrel to vent gasses. I’ve not used a ported barrel on my Polymer80 but I do have a cz.75 with a ported barrel and the porting definitely helps.

Another option is to go with a standard length barrel that is more or less flush with the end of the slide. My next 34 will have a Zaffiri match grade flush barrel that is fluted and has a deep crown to protect the end.

Bottom line, you have a ton of options in terms of functionality and looks that you can consider so spending some time thinking about.

Vendors I’ve Heard Good Things About

So, you can do plenty of reading on offerings from vendors. The options are amazing – length, twist rate, thickness, threaded, fluted, ported, color and so forth. Just make sure you get a generation 3 compatible barrel and it matches the model of pistol you are building. In researching barrels, the following have good reputations: Agency Arms, Faxon, Glock OEM, Killer Innovations, Lone Wolf, Silencerco, Storm Lake, Wilson Combat, Zaffiri and Zev. If you click on the vendor names previously listed, a dedicated tab will open showing current offerings on eBay, if there are any.

Current eBay Glock Gen 3 Barrel Listings

Note the following a real time listing of barrels for sale on eBay. Pay attention to the brand as there are a ton of no-name barrels being imported of varying quality.

For GLOCK 22 Gen 3 Match Grade Conversion Barrel .40 S&W to 9mm WITH 10 Rnd MAG

$84.95
End Date: Wednesday Feb-19-2020 21:25:04 PST
Buy It Now for only: $84.95
Buy It Now | Add to watch list

Strike Industries ARK Spiral Barrel for Glock 17 Gen 1 2 3 4 G17 Fluted 9mm USA

$169.85
End Date: Sunday Feb-2-2020 12:51:47 PST
Buy It Now for only: $169.85
Buy It Now | Add to watch list

Glock 22 40 Cal Conversion 9mm Full Length Stainless Steel Barrel P80 Gen 3 4

$72.00
End Date: Monday Jan-27-2020 18:35:09 PST
Buy It Now for only: $72.00
Buy It Now | Add to watch list

ZEV Pro for GLOCK 19 Gen 3, 4, 5 Gold Match Grade 9mm Barrel BBL-19-PRO-GLD

$167.95
End Date: Friday Feb-14-2020 13:41:05 PST
Buy It Now for only: $167.95
Buy It Now | Add to watch list

Factory Glock 19 Gen 4 Barrel OEM fits gen 2 & 3 replacement barrel

$75.00
End Date: Thursday Feb-13-2020 8:05:18 PST
Buy It Now for only: $75.00
Buy It Now | Add to watch list

Rock Island Armory FITS Glock 17 22TCM9R GEN 3 Barrel, Recoil Spring Conversion

$136.25
End Date: Sunday Feb-9-2020 22:43:41 PST
Buy It Now for only: $136.25
Buy It Now | Add to watch list

Rock Island Armory FITS Glock 19 22TCM9R GEN 3 Barrel, Recoil Spring Conversion

$136.50
End Date: Tuesday Feb-11-2020 22:24:00 PST
Buy It Now for only: $136.50
Buy It Now | Add to watch list

ZEV for GLOCK 19 Gen 3, 4, 5 Stainless G19 Dimpled STS 9mm Barrel BBL-19-D

$184.88
End Date: Sunday Feb-16-2020 13:09:35 PST
Buy It Now for only: $184.88
Buy It Now | Add to watch list

Zev Glock 17 Gen 3 & 4 Barrel BBL-17-D-DLC

$98.00 (4 Bids)
End Date: Thursday Jan-30-2020 9:04:14 PST
Bid now | Add to watch list

Lone Wolf Barrel For Glock 22&31 Conversion to 9mm Stock Length LWD-229N

$98.99
End Date: Thursday Feb-20-2020 14:03:31 PST
Buy It Now for only: $98.99
Buy It Now | Add to watch list

Nitride Melonite Barrel for Glock 26 G26 9mm NEW 9x19 Match Gen 3 P80

$59.99
End Date: Friday Feb-21-2020 15:03:38 PST
Buy It Now for only: $59.99
Buy It Now | Add to watch list

Strike Industries ARK Spiral Barrel for Glock 19 Gen 1 2 3 4 G19 Fluted 9mm USA

$169.84
End Date: Sunday Feb-23-2020 22:29:04 PST
Buy It Now for only: $169.84
Buy It Now | Add to watch list

For GLOCK 23 Gen 3 Match Grade Conversion Barrel .40 S&W to 9mm Stainless Steel

$99.99
End Date: Thursday Feb-6-2020 1:17:31 PST
Buy It Now for only: $99.99
Buy It Now | Add to watch list

Lone Wolf LWD Barrel For Glock 23/32 Conversion To 9mm Stock Length LWD-239N

$97.99
End Date: Tuesday Feb-18-2020 7:58:16 PST
Buy It Now for only: $97.99
Buy It Now | Add to watch list

Rock Island Armory Glock 17 Gen 3 22TCM9R Barrel & Recoil Spring Conversion Kit

$134.95
End Date: Wednesday Feb-5-2020 15:15:02 PST
Buy It Now for only: $134.95
Buy It Now | Add to watch list

S3F Solutions Glock 19 Gen 1-5 Match-Grade Fluted Barrel - Gold TiN

$179.99
End Date: Sunday Feb-9-2020 18:28:00 PST
Buy It Now for only: $179.99
Buy It Now | Add to watch list

For Glock 26 Replacement Barrel 9mm G26 NEW Nitride Fit GEN 3,4 P80 940SC

$62.00
End Date: Sunday Jan-26-2020 8:51:01 PST
Buy It Now for only: $62.00
Buy It Now | Add to watch list

Glock 19 gen 1 2 3 4 light weight 416R SS stainless barrel w nickel finish new

$149.99
End Date: Tuesday Feb-4-2020 15:38:21 PST
Buy It Now for only: $149.99
Buy It Now | Add to watch list

BCA Tactical Barrel For Glock 19 Barrel 9mm G19 NEW Nitride Fits GEN 3,4,5

$66.00
End Date: Sunday Feb-23-2020 20:17:43 PST
Buy It Now for only: $66.00
Buy It Now | Add to watch list

Nitride Melonite Barrel for Glock 23 G23 .40SW .40 NEW Match Gen 3 Stainless P80

$64.99
End Date: Friday Feb-21-2020 15:02:58 PST
Buy It Now for only: $64.99
Buy It Now | Add to watch list

Glock 22 40 S&W Conversion to 9mm Full Size Stainless Steel Barrel P80 Gen 3 4

$79.95
End Date: Tuesday Feb-4-2020 19:25:05 PST
Buy It Now for only: $79.95
Buy It Now | Add to watch list

Rival Arms G34 Match Grade Barrel For Glock 34 Gen3/4 9MM 1:10 Twist 6 Groove

$179.99
End Date: Monday Feb-17-2020 20:01:24 PST
Buy It Now for only: $179.99
Buy It Now | Add to watch list

Lone Wolf LWD Barrel For GLOCK 17 9mm 9" Length LWD-17-9IN

$136.98
End Date: Friday Feb-7-2020 8:32:19 PST
Buy It Now for only: $136.98
Buy It Now | Add to watch list

Zev Technologies LATEST OPTIMIZED Glock 17 Barrel Gen 3 4 Bronze BBL-17-OPT-BRZ

$214.99
End Date: Sunday Feb-23-2020 10:08:55 PST
Buy It Now for only: $214.99
Buy It Now | Add to watch list

Zev Technologies LATEST OPTIMIZED Glock 17 Barrel Gen 3 4 Black BBL-17-OPT-DLC

$214.99
End Date: Sunday Feb-23-2020 10:37:10 PST
Buy It Now for only: $214.99
Buy It Now | Add to watch list

NEW Glock 19 gen 3 Heat Treated Stainless Steel Barrel by X-Caliber Precision

$99.00
End Date: Saturday Jan-25-2020 9:01:36 PST
Buy It Now for only: $99.00
Buy It Now | Add to watch list

ZEV for GLOCK 19 Gen 3, 4, 5 Bronze Match Grade Dimpled 9mm Barrel BBL-19-D-BRZ

$184.88
End Date: Wednesday Jan-29-2020 11:16:05 PST
Buy It Now for only: $184.88
Buy It Now | Add to watch list

Alpha Wolf 9mm Barrel Stock Length fits Glock 19

$139.95
End Date: Wednesday Jan-29-2020 14:34:33 PST
Buy It Now for only: $139.95
Buy It Now | Add to watch list

Stainless Glock 19 9mm Barrel G19 Gen3 match grade lot# 200

$69.99
End Date: Thursday Feb-6-2020 18:30:56 PST
Buy It Now for only: $69.99
Buy It Now | Add to watch list

I hope this helps you out.


If you find this post useful, please either buy something using one of the links in the post or on the following links to eBay and Amazon to buy something.   With Amazon, if you click on one of our links and then buy something else – even unrelated stuff like clothes, electronics and groceries – we get credit and it would be hugely appreciated.  Doing something like the above will help us fund continued development of the blog.


Customizing The Lower Parts In A Polymer80 Frame Via eBay

In the last post, I recommended that builders new to Polymer80s either start with an OEM Lower Parts Kit (LPK) or at least have one just in case their aftermarket parts are out of spec or something fails. In this post we are going to talk about customizing these same parts.

When you look at a Glock Gen 3 LPK for the model of pistol you plan (17, 19, 34, etc.) the following tend to be the parts you need:

  • Slide stop lever with spring
  • Slide lock & spring
  • Magazine release & spring
  • Trigger with trigger bar
  • Trigger housing with ejector
  • Trigger spring
  • Trigger pin
  • Trigger housing pin
  • Connector (5 pound)

I have seen aftermarket parts on just about all of the above and it depends on what you are buying. For example, you may just decide to replace the trigger shoe and need everything else or you may buy an entire trigger group with everything except the pins. The point is that if you decide to customize some or all of the parts, make sure that you have eveything required – springs, pins, etc.

For example, on my PF940V2 full size frame configured like a Glock 34, I am using an Apex aftermarket trigger shoe and bar but everything else trigger related is OEM glock. On my PF940V2 configured like a Glock 17, I am running a Zev Fulcrum Adjustable Trigger Upgrade Kit that includes the whole trigger assembly, firing pin, springs and plunger. Which of the two is smoother? I manually polished the Apex very carefully and it is very smooth. The Fulcrum is dragging some and I need to polish it one of these days. For as much as I paid, I’m surprised that any polishing is needed but it is a light short pull though.

So, when you do your lower, think things through. I automatically go with an extended Glock slide stop found on a model 34, an extended slide lock, a Vickers extended magazine release, all stainless pins and the trigger is an “it depends”. On my next planned 34 build, I am going to mirror polish all of the OEM Glock parts and then decide where to go from there.

My Glock 34 build – Apex trigger shoe & bar, Glock 34 slide release, extended slide lock and Vikers extended magazine release. This combination works great for me.

A few eBay buyer tips for you:

  • Look at the number of transactions and rating of the seller. If they have less than 10 sales, your potential risk increases.
  • Stick to Gen 3 parts. Glock has been evolving their pistols for a while now and the Polymer80 frames are designed with Gen 3 models in mind.
  • Make sure the parts you are looking for match the model you are building. Not all parts are interchangeable across models.
  • If the deal is almost too good to be true, it probably is. For example, you’re not going to find a high-end assembled slide with barrel for $50. Sure there are used parts and good deals but there are also scams. This is another reason to look at the seller’s ratings.

Gen 3 Triggers

There are a ton of groups making replacement Glock triggers. I’ve used Apex and Zev personally but have also heard good reports about Agency Arms, Overwatch Precision and Velocity Arms. Please note if you click on one of the previous names, a new tab will open with a dedicated search for that brand of trigger will open. With the triggers, you definitely need to pay attention to what comes with your purchase and what else you will still need to source. The following is a generic search on Glock Gen 3 Triggers:

Serpico Bravo ABS Gen 3-4 Flat Face Trigger Shoe fits Glock and P80 All Models

$32.99
End Date: Tuesday Feb-4-2020 3:35:00 PST
Buy It Now for only: $32.99
Buy It Now | Add to watch list

Glock OEM Smooth Drop-in Trigger w/ Bar Assembly Gen 1 2 3 4 9mm,40,357 SP00357

$15.75
End Date: Sunday Feb-23-2020 16:56:51 PST
Buy It Now for only: $15.75
Buy It Now | Add to watch list

Vickers Tactical Glock Gen 3-4 / 42 / 43 / 43x / 48 Flat-Faced Carry Trigger

$34.84
End Date: Thursday Feb-20-2020 9:37:22 PST
Buy It Now for only: $34.84
Buy It Now | Add to watch list

GEN 1-3 17 19 26 34 TRIGGER HOUSING OVERTRAVEL STOP FITS GLOCK 9MM

$22.00
End Date: Monday Feb-10-2020 15:07:05 PST
Buy It Now for only: $22.00
Buy It Now | Add to watch list

STRYKOUT Gen 3-4 Flat Trigger Shoe fits Glock 20 21 29 30 40 41 with Trigger Bar

$58.99
End Date: Saturday Feb-1-2020 20:57:33 PST
Buy It Now for only: $58.99
Buy It Now | Add to watch list

Gen 3 Pins

You have the option of using Glock OEM pins or aftermarket. Now many will tell you that the polymer trigger housing pin is just fine and is proven. I had the polymer pin snap during a range session with my Polymer80 Glock 17 that has a Zev Fulcrum trigger. Why, I don’t know but I only use stainless pins now. I’m running pins from GunTools.

2 Glock Factory OEM Firing Pin Channel Liner SP01148 For Glock Gen 3, 4, 5

$9.88
End Date: Wednesday Feb-19-2020 7:12:58 PST
Buy It Now for only: $9.88
Buy It Now | Add to watch list

Complete Lightening Cut Glock 17 Gen 3 Slide Kit with Barrel & Internals PF940V2

$244.95
End Date: Thursday Jan-30-2020 12:41:09 PST
Buy It Now for only: $244.95
Buy It Now | Add to watch list

For GLOCK Gen 1-3 G17 or Polymer 80 Lower Parts Kit OEM 9 millimeter Choose Kit

$48.00
End Date: Tuesday Feb-18-2020 7:05:17 PST
Buy It Now for only: $48.00
Buy It Now | Add to watch list

Stainless Steel Gen 3 Pin Kit Set for Glock 17 19 20 21 22 23 26 27 34 35 37 38

$8.75
End Date: Tuesday Feb-4-2020 17:52:19 PST
Buy It Now for only: $8.75
Buy It Now | Add to watch list

Serpico Bravo ABS Gen 3-4 Flat Face Trigger Shoe fits Glock and P80 All Models

$32.99
End Date: Tuesday Feb-4-2020 3:35:00 PST
Buy It Now for only: $32.99
Buy It Now | Add to watch list

Glock Factory Gen 3 Extended Slide Stop (Release)

I have big hands and really prefer a slide stop lever that sticks out just a bit more than the flush fitting original. I use the OEM Glock Factory extended slide stop unit now and it’s way easier for me to operate without being obnoxiously large.

FOR GLOCK Extended Slide Stop Release Fits GEN 1-4 GLOCK Models CHOOSE COLOR

$13.49
End Date: Wednesday Feb-12-2020 0:11:27 PST
Buy It Now for only: $13.49
Buy It Now | Add to watch list

GLOCK FACTORY EXTENDED SLIDE STOP/RELEASE FOR GEN 3 & 4 GLOCK MODELS 20,21,40,41

$16.99
End Date: Sunday Jan-26-2020 13:10:43 PST
Buy It Now for only: $16.99
Buy It Now | Add to watch list

FOR GLOCK Extended Slide Stop Release Fits GEN 1-4 GLOCK Models CHOOSE COLOR

$17.99
End Date: Wednesday Feb-12-2020 0:11:27 PST
Buy It Now for only: $17.99
Buy It Now | Add to watch list

Glock Factory Extended Slide Stop Release 3pin Fit Gen 2 3 4 9mm 40 357 SP07496

$14.25
End Date: Monday Feb-3-2020 8:45:36 PST
Buy It Now for only: $14.25
Buy It Now | Add to watch list

FOR GLOCK Extended Slide Stop Release Fits GEN 1-4 GLOCK Models CHOOSE COLOR

$17.99
End Date: Wednesday Feb-12-2020 0:11:27 PST
Buy It Now for only: $17.99
Buy It Now | Add to watch list

Gen 3 Extended Slide Lock

The OEM slide lock is too small for me. I have big hands and not a lot of feeling at my fingertips so I find myself fumbling around for the slide lock. An extended slide lock extends the unit just a bit further and enables be to more easily actuate the unit. I am runnng Deltac units but have also seen good reviews of units from Bastion, and NDZ. Note, you will need to supply the spring in every case I have seen.

DELTAC® Extended Slide Lock Lever For Glock 17 19 20 21 23 Gen1 to Gen4 (GLC202)

$8.95
End Date: Sunday Feb-23-2020 9:40:44 PST
Buy It Now for only: $8.95
Buy It Now | Add to watch list

DELTAC® Extended Slide Lock release Lever For Glock 17 19 20 21 23 Gen1 to Gen4

$10.99
End Date: Tuesday Feb-4-2020 17:27:45 PST
Buy It Now for only: $10.99
Buy It Now | Add to watch list

CDS Extended Stainless Steel Slide Lock Lever For GLOCK Gen 1-5 G42 43 43X 48

$10.95
End Date: Thursday Jan-30-2020 1:29:22 PST
Buy It Now for only: $10.95
Buy It Now | Add to watch list

Extended Slide Lock Release Lever Black For Glock 17 19 20 21 23

$8.49
End Date: Wednesday Feb-19-2020 11:31:19 PST
Buy It Now for only: $8.49
Buy It Now | Add to watch list

BASTION Extended Stainless Steel Slide Lock Lever For ALL Glock Gun Models

$8.45
End Date: Friday Feb-14-2020 21:05:33 PST
Buy It Now for only: $8.45
Buy It Now | Add to watch list

Vickers Tactical Tactical Extended Magazine Release

One last part to cover – the magazine release. I can’t readily actuate the shorter OEM unit. I find I need just a bit longer release and really like the Vickers model that is made for them by Tango Down. Now, if you are wondering why, some units are so long that it is very easy for them to get bumped and release the mag. For some units, even laying the pistol down on it’s side might actuate the release. That may not matter for a competition pistol but I’d rather find a balance between ergonomics and reliability, hence my exclusive use of the Vickers model. Note, in most cases including the Vickers, you will need the spring. Here is a general listing of extended magazine releases:

Extended Aluminum Magazine Release Fits Glock Gen1 2 3 Aluminum SMALL Frame

$23.00
End Date: Wednesday Feb-12-2020 11:34:27 PST
Buy It Now for only: $23.00
Buy It Now | Add to watch list

Extended Aluminum Magazine Release Fits Glock Gen1 2 3 Aluminum SMALL Frame

$23.00
End Date: Wednesday Feb-12-2020 11:34:27 PST
Buy It Now for only: $23.00
Buy It Now | Add to watch list

Extended Aluminum Magazine Release Fits Glock Gen1 2 3 Aluminum SMALL Frame

$23.00
End Date: Wednesday Feb-12-2020 11:34:27 PST
Buy It Now for only: $23.00
Buy It Now | Add to watch list

TANGO DOWN VICKERS Extended Magazine Release For GLOCK Gen 4 / 5 GMR-003 Choose

$17.38
End Date: Thursday Feb-6-2020 12:34:34 PST
Buy It Now for only: $17.38
Buy It Now | Add to watch list

Extended Aluminum Magazine Release Fits Glock Gen1 2 3 Aluminum SMALL Frame

$23.00
End Date: Wednesday Feb-12-2020 11:34:27 PST
Buy It Now for only: $23.00
Buy It Now | Add to watch list

So this wraps up a rather long post. I hope this helps you out.


If you find this post useful, please either buy something using one of the links in the post or on the following links to eBay and Amazon to buy something.   With Amazon, if you click on one of our links and then buy something else – even unrelated stuff like clothes, electronics and groceries – we get credit and it would be hugely appreciated.  Doing something like the above will help us fund continued development of the blog.


Glock Gen 3 Lower Parts Kits (LPKs) on eBay For Polymer80 Builds

In the last post, I gave you a general link to Glock parts and now we’ll start diving a bit deeper. When you are assembling a Polymer80 pistol, you will need a lower parts kit (LPK) that either you need to buy or will be part of a larger kit depending on what you are doing. If you are new to building, it is hard to go wrong with with an original equipment manufacture (OEM) Glock LPK vs. aftermarket that might have some challenges and others are best avoided. To avoid headaches while you learn, you want a Glock Gen 3 LPK. In the next post, I’ll go over the parts if you want to customize everything and you can do that but to start, go Glock.

What is in a LPK?

You will want to confirm the parts list with your seller, but here’s what would be in a full size Glock brand Gen 3 LPK:

  • Slide stop lever with spring
  • Slide lock & spring
  • Magazine release & spring
  • Trigger with trigger bar
  • Trigger housing with ejector
  • Trigger spring
  • Trigger pin
  • Trigger housing pin
  • Connector (5 pound)

LPKs are on eBay from Glock, Polymer80, marvel mystery parts (in other words, some have no maker identified and are to be avoided) and others. Again, for a newbie, I’d recommend starting with a Glock brand LPK to avoid potential stacked tolerance issues that you would need to address – if you are ready to drive in with all custom parts, you definitely can but it is still handy to have Glock OEM parts around for troubleshooting or spares just in case.

A few eBay buyer tips for you:

  • Look at the number of transactions and rating of the seller. If they have less than 10 sales, your potential risk increases.
  • Stick to Gen 3 parts. Glock has been evolving their pistols for a while now and the Polymer80 frames are designed with Gen 3 models in mind.
  • Make sure the parts you are looking for match the model you are building. Not all parts are interchangeable across models.
  • If the deal is almost too good to be true, it probably is. You’re not going to find a high-end assembled slide with barrel for $50. Sure there are used parts and good deals but there are also scams. This is another reason to look at the seller’s ratings.

OEM Glock LPKs Available on eBay

GLOCK 21/20 SF Gen-3 SF Lower Parts OEM 45-ACP Kit P-80 PF-45 LPK Build 10-MM

$49.71
End Date: Thursday Feb-6-2020 16:50:35 PST
Buy It Now for only: $49.71
Buy It Now | Add to watch list

GLOCK 19 Gen-3 LPK OEM 9-MM PF940-C LPK

$50.00
End Date: Sunday Feb-16-2020 6:48:52 PST
Buy It Now for only: $50.00
Buy It Now | Add to watch list

GLOCK 26 Gen-3 Lower Parts Kit OEM 9-MM P80 Spectre PF940-SC Polymer LPK Build

$47.96
End Date: Wednesday Feb-19-2020 14:59:18 PST
Buy It Now for only: $47.96
Buy It Now | Add to watch list

GLOCK 17 OEM P80 Gen 3 Lower Parts 9 MM Spectre PF940v2 LPK

$38.55
End Date: Thursday Feb-6-2020 10:24:40 PST
Buy It Now for only: $38.55
Buy It Now | Add to watch list

GLOCK 21 SF Gen-3 LPK OEM 45ACP P-80 PF45 LPK

$52.95
End Date: Sunday Feb-23-2020 20:00:54 PST
Buy It Now for only: $52.95
Buy It Now | Add to watch list

GLOCK 19 Gen-3 LPK OEM 9-MM PF940-C LPK

$53.95
End Date: Sunday Feb-16-2020 6:48:52 PST
Buy It Now for only: $53.95
Buy It Now | Add to watch list

For Glock Factory OEM 9mm Gen 1-3 LPK G-17 Polymer 80 BRAND NEW!!!

$34.00
End Date: Tuesday Feb-11-2020 11:38:23 PST
Buy It Now for only: $34.00
Buy It Now | Add to watch list

GLOCK 19 Gen-3 LPK OEM 9-MM PF940-C LPK

$178.95
End Date: Sunday Feb-16-2020 6:48:52 PST
Buy It Now for only: $178.95
Buy It Now | Add to watch list

Fits GLOCK 17 Gen-3 LPK OEM 9mm PF940v2 LPK

$42.97
End Date: Sunday Jan-26-2020 12:44:30 PST
Buy It Now for only: $42.97
Buy It Now | Add to watch list

EXTENDED GLOCK 19 Gen-3 Lower Parts Kit OEM 9-MM P-80 Spectre PF940-C LPK Build

$54.99
End Date: Saturday Feb-15-2020 18:15:02 PST
Buy It Now for only: $54.99
Buy It Now | Add to watch list

GLOCK 17 Gen-3 Lower Parts Kit OEM 9-MM P-80 Spectre PF940V2 LPK Build

$49.99
End Date: Saturday Feb-1-2020 11:48:30 PST
Buy It Now for only: $49.99
Buy It Now | Add to watch list

Fits GLOCK 17 Gen-3 KIT OEM 9-MM PF940V2 LPK

$53.50
End Date: Sunday Jan-26-2020 12:31:05 PST
Buy It Now for only: $53.50
Buy It Now | Add to watch list

GLOCK 21 SF Gen-3 Lower Parts Kit OEM 45ACP P-80 Spectre PF45 LPK Build

$49.99
End Date: Tuesday Feb-18-2020 7:27:33 PST
Buy It Now for only: $49.99
Buy It Now | Add to watch list

GLOCK 26 Gen-3 LPK OEM 9-MM PF940SC LPK

$47.00
End Date: Sunday Feb-16-2020 6:52:35 PST
Buy It Now for only: $47.00
Buy It Now | Add to watch list

Full Replacement Parts Kit For Gen-3 Glock 17 Polymer-80 Spectre PF940-v2 LPK

$47.97
End Date: Thursday Feb-20-2020 16:10:48 PST
Buy It Now for only: $47.97
Buy It Now | Add to watch list

Full Replacement Parts Kit For Gen-3 Glock 17 Polymer-80 Spectre PF940-v2 LPK

$37.97
End Date: Thursday Feb-20-2020 16:10:48 PST
Buy It Now for only: $37.97
Buy It Now | Add to watch list

Full Replacement Parts Kit For Gen-3 Glock 17 Polymer-80 Spectre PF940-v2 LPK

$50.90
End Date: Thursday Feb-20-2020 16:10:48 PST
Buy It Now for only: $50.90
Buy It Now | Add to watch list

GLOCK 26 Gen-3 LPK OEM 9-MM PF940SC LPK

$47.00
End Date: Sunday Feb-16-2020 6:52:35 PST
Buy It Now for only: $47.00
Buy It Now | Add to watch list

Fits GLOCK 19 Gen-3 Parts Kit OEM 9-MM PF940c LPK

$38.50
End Date: Sunday Jan-26-2020 13:00:48 PST
Buy It Now for only: $38.50
Buy It Now | Add to watch list

New GLOCK 22 Gen 3 Slide Lower Parts Kit OEM 40-S&W LPK 2 MAG-AZINES CASE 80

$539.71
End Date: Saturday Feb-22-2020 5:28:26 PST
Buy It Now for only: $539.71
Buy It Now | Add to watch list

GLOCK 26 Gen-3 LPK OEM 9-MM PF940SC LPK

$50.50
End Date: Sunday Feb-16-2020 6:52:35 PST
Buy It Now for only: $50.50
Buy It Now | Add to watch list

New GLOCK 19 Gen 3 LPK OEM 9MM 9 Spectre PF940C

$45.95
End Date: Wednesday Feb-5-2020 13:36:06 PST
Buy It Now for only: $45.95
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GLOCK 19 Gen-3 LPK OEM 9-MM PF940-C LPK

$182.95
End Date: Sunday Feb-16-2020 6:48:52 PST
Buy It Now for only: $182.95
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Full Replacement Parts Kit For Gen-3 Glock 17 Polymer-80 Spectre PF940-v2 LPK

$42.95
End Date: Thursday Feb-20-2020 16:10:48 PST
Buy It Now for only: $42.95
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Glock 19 LPK NEW OEM 9mm Gen3 Lower Parts Premium Ext Upgrades Fit Polymer 80

$55.97
End Date: Wednesday Jan-29-2020 22:16:34 PST
Buy It Now for only: $55.97
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Full Replacement Parts Kit For Gen-3 Glock 17 Polymer-80 Spectre PF940-v2 LPK

$91.97
End Date: Thursday Feb-20-2020 16:10:48 PST
Buy It Now for only: $91.97
Buy It Now | Add to watch list

GLOCK 26 Gen-3 LPK OEM 9-MM P80 Spectre PF940-SC LPK

$47.75
End Date: Saturday Feb-1-2020 10:45:46 PST
Buy It Now for only: $47.75
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GLOCK 17 Gen-3 LPK OEM 9-MM PF940V2 LPK

$54.95
End Date: Sunday Feb-16-2020 6:51:35 PST
Buy It Now for only: $54.95
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Fits GLOCK 19 Gen-3 LPK OEM 9-MM PF940c LPK

$39.50
End Date: Sunday Jan-26-2020 12:53:50 PST
Buy It Now for only: $39.50
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New GLOCK 19 Gen 3 LPK OEM 9MM 9 80 Spectre PF940C

$38.99
End Date: Wednesday Feb-5-2020 13:32:24 PST
Buy It Now for only: $38.99
Buy It Now | Add to watch list

If you find this post useful, please either buy something using one of the links in the post or on the following links to eBay and Amazon to buy something.   With Amazon, if you click on one of our links and then buy something else – even unrelated stuff like clothes, electronics and groceries – we get credit and it would be hugely appreciated.  Doing something like the above will help us fund continued development of the blog.


Finding Parts For Your Polymer 80 Pistol Build on eBay

I really like building the Polymer80 pistols (Why Polymer80s Excite Me, Tips for Smooth Polymer80 Pistols, and Troubleshooting Your Build). What attracts me is the 1911-like grip angle, Picatinny Rail and the ability to customize the pistol however I want it. You will not save money doing these builds but the results are really cool. When you are planning a build, there are the expected sources of parts like 80P Builder and Glock Store but also a big one that might surprise you – eBay. I’m going to do a series of posts over the next few days with links to a variety of parts listed there.

A few tips for you:

  • Look at the number of transactions and rating of the seller. If they have less than 10 sales, your potential risk increases.
  • Stick to Gen 3 parts. Glock has been evolving their pistols for a while now and the Polymer80 frames are designed with Gen 3 models in mind.
  • Make sure the parts you are looking for match the model you are building. Not all parts are interchangeable across models.
  • If the deal is almost too good to be true, it probably is. You’re not going to find a high-end assembled slide with barrel for $50. Sure there are used parts and good deals but there are also scams. This is another reason to look at the seller’s ratings.

Polymer80 parts in general:

AlphaWolf Slide for Glock 20 Polymer80 Gen 3 w/ Dovetail and OEM Rear Serrations

$199.95
End Date: Saturday Feb-1-2020 7:36:22 PST
Buy It Now for only: $199.95
Buy It Now | Add to watch list

Glock 23 Gen 3 Slide Upper Complete OEM For Polymer 80 G23 Gen3 Made In USA

$399.00
End Date: Wednesday Feb-12-2020 5:33:09 PST
Buy It Now for only: $399.00
Buy It Now | Add to watch list

Steel City Arsenal 9mm Upper Parts Kit for Glock Gen 1-4 Polymer 80 w/Liner Tool

$79.99
End Date: Monday Feb-17-2020 16:11:31 PST
Buy It Now for only: $79.99
Buy It Now | Add to watch list

Polymer80 PF940v2, PF940C, & PF940CL Magwell - High Profile - ISLE MFG

$24.99
End Date: Saturday Feb-1-2020 6:12:54 PST
Buy It Now for only: $24.99
Buy It Now | Add to watch list

Polymer80 PF940v2, PF940C, & PF940CL Magwell - High Profile - ISLE MFG

$25.99
End Date: Saturday Feb-1-2020 6:12:54 PST
Buy It Now for only: $25.99
Buy It Now | Add to watch list

Extended Magwell for Polymer 80 Glock Frame

$20.00
End Date: Tuesday Feb-18-2020 12:48:04 PST
Buy It Now for only: $20.00
Buy It Now | Add to watch list

For GLOCK G 19 Gen 1-3 Lower Parts Kit OEM 9 millimeter Polymer 80 Genuine Parts

$48.00
End Date: Sunday Feb-2-2020 14:16:46 PST
Buy It Now for only: $48.00
Buy It Now | Add to watch list

Aluminum Flared Metal Magwell Fits Polymer 80 P80 PF940C PF940V2 Anodized Finish

$29.99
End Date: Saturday Feb-1-2020 15:02:51 PST
Buy It Now for only: $29.99
Buy It Now | Add to watch list

Steel City Arsenal Magwell for Polymer80 PF940V2 Full Size Frame Battleworn Gray

$79.99
End Date: Monday Feb-17-2020 16:11:26 PST
Buy It Now for only: $79.99
Buy It Now | Add to watch list

Alpha Se7en Compact Aluminum Flared Magwell for Polymer 80 PF940C | PF940V2 P80

$35.95
End Date: Sunday Feb-23-2020 18:11:23 PST
Buy It Now for only: $35.95
Buy It Now | Add to watch list

Glock 23 Gen 3 Lower Completion Parts Kit Factory G23 Polymer80 Polymer PF940C

$46.00
End Date: Saturday Feb-8-2020 13:02:38 PST
Buy It Now for only: $46.00
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KG Lower Parts Kit for Polymer 80 PF940C or Glock 19

$49.99
End Date: Tuesday Feb-18-2020 19:18:55 PST
Buy It Now for only: $49.99
Buy It Now | Add to watch list

Glock 17 Factory OEM 9mm Gen 1-3 Lower Parts Kit G17 Polymer80, P80, 80P

$52.19
End Date: Friday Feb-7-2020 12:34:15 PST
Buy It Now for only: $52.19
Buy It Now | Add to watch list

Slide for Glock 19 Gen3, Polymer80 w/ Dovetail, Angled Serrations, NitrideBlack+

$149.95
End Date: Monday Feb-3-2020 19:23:01 PST
Buy It Now for only: $149.95
Buy It Now | Add to watch list

For GLOCK Gen 1-3 G17 or Polymer 80 Lower Parts Kit OEM 9 millimeter Choose Kit

$79.95
End Date: Tuesday Feb-18-2020 7:05:17 PST
Buy It Now for only: $79.95
Buy It Now | Add to watch list

Polymer80 PF940v2, PF940C & PF940CL Magwell - Low Profile - ISLE MFG

$24.99
End Date: Friday Feb-7-2020 12:16:41 PST
Buy It Now for only: $24.99
Buy It Now | Add to watch list

Glock 26 Gen 3 Slide Upper Barrel Made in USA OEM G26 Gen3 Polymer80 PF940SC

$409.00
End Date: Friday Feb-7-2020 12:08:05 PST
Buy It Now for only: $409.00
Buy It Now | Add to watch list

Glock 19 Factory OEM 9mm Gen 1-3 Lower Parts Kit G19 Polymer80, P80, 80P

$52.19
End Date: Friday Feb-7-2020 12:28:30 PST
Buy It Now for only: $52.19
Buy It Now | Add to watch list

Glock 17 OEM 9mm w/Alum Mag Release Gen 1-3 Lower Parts Kit G17 Polymer80, P80

$54.99
End Date: Monday Feb-17-2020 17:10:04 PST
Buy It Now for only: $54.99
Buy It Now | Add to watch list

Slide for Glock 34 P80 Gen 3 Polymer80 w/ Front and Rear Angled Serrations

$209.95
End Date: Thursday Feb-6-2020 20:28:04 PST
Buy It Now for only: $209.95
Buy It Now | Add to watch list

Polymer80 PF940v2, PF940C & PF940CL Magwell - Low Profile - ISLE MFG

$25.99
End Date: Friday Feb-7-2020 12:16:41 PST
Buy It Now for only: $25.99
Buy It Now | Add to watch list

Glock 20 20SF Gen 3 Slide Upper Barrel Glock OEM G20 Gen3 Polymer80 PF45 10mm

$481.00
End Date: Thursday Feb-13-2020 20:31:59 PST
Buy It Now for only: $481.00
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GLOCK 19 Gen 1-3 Lower Parts OEM 9MM Polymer 80 PF940C OEM Kit G19

$56.50
End Date: Sunday Jan-26-2020 16:55:17 PST
Buy It Now for only: $56.50
Buy It Now | Add to watch list

Glock 19 9mm Factory Barrel Preowned Gen 1-4 Polymer 80

$46.00 (8 Bids)
End Date: Thursday Jan-30-2020 15:18:10 PST
Bid now | Add to watch list

NEW GLOCK OEM GEN 3 G 19 COMPLETE Slide Kit fits poly 80

$379.99
End Date: Friday Feb-21-2020 10:29:29 PST
Buy It Now for only: $379.99
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New Complete Upper Slide Barrel Parts Sights For Glock 19 9mm GEN 4 Slide G19

$249.99
End Date: Thursday Jan-30-2020 6:35:03 PST
Buy It Now for only: $249.99
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For GLOCK G 19 Gen 1-3 Lower Parts Kit OEM 9 millimeter Polymer 80 Genuine Parts

$74.95
End Date: Sunday Feb-2-2020 14:16:46 PST
Buy It Now for only: $74.95
Buy It Now | Add to watch list

Lone Wolf Distributors Lower Parts Kit for Glock or Polymer80

$59.99
End Date: Saturday Feb-1-2020 12:14:18 PST
Buy It Now for only: $59.99
Buy It Now | Add to watch list

Polymer80 PF940v2, PF940C, & PF940CL Magwell - High Profile - ISLE MFG

$24.99
End Date: Saturday Feb-1-2020 6:12:54 PST
Buy It Now for only: $24.99
Buy It Now | Add to watch list

For Glock Factory OEM 9mm Gen 1-3 LPK G-17 Polymer 80 BRAND NEW!!!

$34.00
End Date: Tuesday Feb-11-2020 11:38:23 PST
Buy It Now for only: $34.00
Buy It Now | Add to watch list

If you find this post useful, please either buy something using one of the links in the post or on the following links to eBay and Amazon to buy something.   With Amazon, if you click on one of our links and then buy something else – even unrelated stuff like clothes, electronics and groceries – we get credit and it would be hugely appreciated.  Doing something like the above will help us fund continued development of the blog.


How To Find Out Torque Specifications for Screws and Bolts: An Outstanding NASA Reference Guide

We’ve all been there – you’re working on a project and wondering how much to torque something so either we don’t bother or just take a guess. What I only found out recently was that in 2017, NASA published a really cool guide called “Installation Torque Tables for Noncritical Applications” – with the document ID as NASA/TM—2017-219475.

The document provides the torque specifications for a ton of general purpose fasteners that do not have an exact specification assigned – hence the term non-critical. As you can imagine, they get very specific in critical/risky situations.

At any rate, given the size of the bolt or screw, the thread pitch, the material and the depth, they provide a reference torque specification you can follow for both metric (M6, M8, M10, etc.) and SAE (#8, #10, 1/8, 1/4, 3/8, etc.) fasteners. Note, they provide an assembly torque (which is a 65% load from failure) and 100% torque. I use the assembly torque spec.

They also recommend that the depth of thread engagement be 1.5x the diameter of the fastener. So a 1/4″ (0.25″) fastener should have at least 0.25″ x 1.5 = .375″ (3/8″).

Here’s an example table. This is for fasteners going into 6061-T6 aluminum with a thread depth of 3/16″. If we go down for a 10-32 UNF screw, the assembly torque is 22.2 inch pounds. I’d use that lacking any other detailed information. I could go up to 34.2 inch pounds but I have stripped so many fasteners I don’t risk it. I’m a huge fan of Loctite so I go with that and the assembly spec.

Kudos to the two authors and to NASA for making it available. The PDF is a cool reference document and one I use whenever I can’t find a specific torque value for a given application. All you machinists and engineers – you know way more than me so please let me know if you have other resources you recommend.

To access this cool guide, click here for the NASA link or click here for the copy on our server.


If you find this post useful, please either buy something using one of the links to eBay and Amazon.  With Amazon, if you click on one of our links and then buy something else – even unrelated stuff like clothes, electronics and groceries – we get credit and it would be hugely appreciated.  Doing something like the above will help us fund continued development of the blog.


1/2" Torque Wrench Snap Socket Professional Drive Click Type Ratcheting

$27.25
End Date: Monday Feb-3-2020 19:28:00 PST
Buy It Now for only: $27.25
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TORQUE WRENCH LTCR 1/2 in

$12.00 (0 Bids)
End Date: Saturday Jan-25-2020 5:00:01 PST
Buy It Now for only: $20.00
Buy It Now | Bid now | Add to watch list

TEKTON 24330 3/8-Inch Drive Click Torque Wrench, 10-80 Feet Pound

$39.99
End Date: Wednesday Feb-19-2020 8:46:51 PST
Buy It Now for only: $39.99
Buy It Now | Add to watch list

1/2 Inch Torque Wrench Snap Socket Drive Click Type Ratcheting

$26.95
End Date: Friday Feb-7-2020 18:04:47 PST
Buy It Now for only: $26.95
Buy It Now | Add to watch list

1/2" Torque Wrench Snap Socket Professional Drive Click Type Ratcheting

$27.40
End Date: Saturday Feb-15-2020 11:44:07 PST
Buy It Now for only: $27.40
Buy It Now | Add to watch list

Set of 3- 1/4, 3/8, 1/2 Drive Click Type Torque Wrench Snap Socket, Reversible

$54.50
End Date: Tuesday Feb-4-2020 11:52:24 PST
Buy It Now for only: $54.50
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Neiko 1/4" Dr. Torque Wrench | 20-200 In/Lb Auto Click Adjustable Gauge Ratchet

$29.85
End Date: Tuesday Feb-11-2020 13:17:37 PST
Buy It Now for only: $29.85
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Craftsman 1/2 Microtork Torque Wrench 9-44543

$20.50 (21 Bids)
End Date: Thursday Jan-30-2020 15:06:35 PST
Bid now | Add to watch list

3/8" Drive Adjustable Torque Wrench 120-960 in/lb Inch Pound

$23.95
End Date: Monday Feb-10-2020 12:38:01 PST
Buy It Now for only: $23.95
Buy It Now | Add to watch list

1/4 Inch Professional Drive Click Type Ratcheting Torque Wrench

$23.95
End Date: Saturday Feb-8-2020 9:13:04 PST
Buy It Now for only: $23.95
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Polymer80 Glock Builders: There is a TON of parts on eBay

If you are working on a Polymer80 build or even wanting to overhaul your existing Glock, there are a ton of parts on eBay.  You can find some good deals but I would recommend you stick with reputable brands and sellers. For the sellers, I would look for lots of sales – at least over 30 and ideally hundreds – and very good scores.  There are cheap imports/knock-offs showing up so beware no-name stuff.

The following are all real-time listing on eBay so you can go there and find parts.

AlphaWolf Slide for Glock 20 Polymer80 Gen 3 w/ Dovetail and OEM Rear Serrations

$199.95
End Date: Saturday Feb-1-2020 7:36:22 PST
Buy It Now for only: $199.95
Buy It Now | Add to watch list

Glock 23 Gen 3 Slide Upper Complete OEM For Polymer 80 G23 Gen3 Made In USA

$399.00
End Date: Wednesday Feb-12-2020 5:33:09 PST
Buy It Now for only: $399.00
Buy It Now | Add to watch list

Steel City Arsenal 9mm Upper Parts Kit for Glock Gen 1-4 Polymer 80 w/Liner Tool

$79.99
End Date: Monday Feb-17-2020 16:11:31 PST
Buy It Now for only: $79.99
Buy It Now | Add to watch list

Polymer80 PF940v2, PF940C, & PF940CL Magwell - High Profile - ISLE MFG

$24.99
End Date: Saturday Feb-1-2020 6:12:54 PST
Buy It Now for only: $24.99
Buy It Now | Add to watch list

Polymer80 PF940v2, PF940C, & PF940CL Magwell - High Profile - ISLE MFG

$25.99
End Date: Saturday Feb-1-2020 6:12:54 PST
Buy It Now for only: $25.99
Buy It Now | Add to watch list

Extended Magwell for Polymer 80 Glock Frame

$20.00
End Date: Tuesday Feb-18-2020 12:48:04 PST
Buy It Now for only: $20.00
Buy It Now | Add to watch list

For GLOCK Gen 1-3 G17 or Polymer 80 Lower Parts Kit OEM 9 millimeter Choose Kit

$48.00
End Date: Tuesday Feb-18-2020 7:05:17 PST
Buy It Now for only: $48.00
Buy It Now | Add to watch list

Aluminum Flared Metal Magwell Fits Polymer 80 P80 PF940C PF940V2 Anodized Finish

$29.99
End Date: Saturday Feb-1-2020 15:02:51 PST
Buy It Now for only: $29.99
Buy It Now | Add to watch list

For GLOCK Gen 1-3 G17 or Polymer 80 Lower Parts Kit OEM 9 millimeter Choose Kit

$79.95
End Date: Tuesday Feb-18-2020 7:05:17 PST
Buy It Now for only: $79.95
Buy It Now | Add to watch list

Alpha Se7en Compact Aluminum Flared Magwell for Polymer 80 PF940C | PF940V2 P80

$35.95
End Date: Sunday Feb-23-2020 18:11:23 PST
Buy It Now for only: $35.95
Buy It Now | Add to watch list

Steel City Arsenal Magwell for Polymer80 PF940V2 Full Size Frame Battleworn Gray

$79.99
End Date: Monday Feb-17-2020 16:11:26 PST
Buy It Now for only: $79.99
Buy It Now | Add to watch list

KG Lower Parts Kit for Polymer 80 PF940C or Glock 19

$49.99
End Date: Tuesday Feb-18-2020 19:18:55 PST
Buy It Now for only: $49.99
Buy It Now | Add to watch list

Slide for Glock 19 Gen3, Polymer80 w/ Dovetail, Angled Serrations, NitrideBlack+

$149.95
End Date: Monday Feb-3-2020 19:23:01 PST
Buy It Now for only: $149.95
Buy It Now | Add to watch list

Polymer80 PF940v2, PF940C & PF940CL Magwell - Low Profile - ISLE MFG

$24.99
End Date: Friday Feb-7-2020 12:16:41 PST
Buy It Now for only: $24.99
Buy It Now | Add to watch list

Glock 26 Gen 3 Slide Upper Barrel Made in USA OEM G26 Gen3 Polymer80 PF940SC

$409.00
End Date: Friday Feb-7-2020 12:08:05 PST
Buy It Now for only: $409.00
Buy It Now | Add to watch list

Glock 17 Factory OEM 9mm Gen 1-3 Lower Parts Kit G17 Polymer80, P80, 80P

$52.19
End Date: Friday Feb-7-2020 12:34:15 PST
Buy It Now for only: $52.19
Buy It Now | Add to watch list

Glock 19 Factory OEM 9mm Gen 1-3 Lower Parts Kit G19 Polymer80, P80, 80P

$52.19
End Date: Friday Feb-7-2020 12:28:30 PST
Buy It Now for only: $52.19
Buy It Now | Add to watch list

Slide for Glock 34 P80 Gen 3 Polymer80 w/ Front and Rear Angled Serrations

$209.95
End Date: Thursday Feb-6-2020 20:28:04 PST
Buy It Now for only: $209.95
Buy It Now | Add to watch list

Glock 20 20SF Gen 3 Slide Upper Barrel Glock OEM G20 Gen3 Polymer80 PF45 10mm

$481.00
End Date: Thursday Feb-13-2020 20:31:59 PST
Buy It Now for only: $481.00
Buy It Now | Add to watch list

Polymer80 PF940v2, PF940C & PF940CL Magwell - Low Profile - ISLE MFG

$25.99
End Date: Friday Feb-7-2020 12:16:41 PST
Buy It Now for only: $25.99
Buy It Now | Add to watch list


 

If you find this post useful, please either buy something using one of the links in the post or on the following links to eBay and Amazon to buy something.   With Amazon, if you click on one of our links and then buy something else – even unrelated stuff like clothes, electronics and groceries – we get credit and it would be hugely appreciated.  Doing something like the above will help us fund continued development of the blog.


PSA AK-V Part Three: Changing the Brace, Adding a Red Dot and Installing A Quick Takedown Pin For The Dust Cover

Out of the box, the AK-V is impressive. The trigger is decent, the grip and handguard are functional but there were three things I really wanted to do – move to a SBA4 brace, install an optic and create a quick takedown pin so the dust cover could be removed (the big reason I bought the AK-V from a business perspective). So let’s step through each.

Replace The SBA3 Brace With An SBA4

Yes, they are both adjustable braces but that comparison ends there. The SBA4 is much more sturdy and has five length of pull adjustment positions. The SBA4 does go on sale and that is the time to buy one. I got mine for $99 at PSA’s July 4th sale and there was free shipping!

The SBA4 is the top brace and the SBA3 is the bottom. You can instantly see the SBA4 has more bracing and is bulkier. The back end does not flop around either unlike the SBA3.

Now PSA did something with the SBA3 that is a best practice. They staked the castle nut to the receiver end plate. Now, I started thinking about what would be my easiest option and it dawned on me that if I was SB Tactical and wanted to control cost and complexity, I would try and have as few inventory parts as possible and that means as few buffer tubes. Guess what? The SBA3 and the SBA4 both use a Mil-Spec 6 position buffer tube. Problem solved. You can remove the brace just like most AR/M4 stocks – lift up on the locking pin and slide it right off.

The Castle Nut has two real solid stakes in it. Kudos to PSA.
Ta-da! Under the brace is a Mil-Spec buffer tube or “receiver extension” depending on who you talk to. The SBA3 and SBA4 use the same tube!! Note, the weapon is upside down for this photo.
Here’s a good shot of the receiver. See that small vertical slider switch just above the mag catch? That’s the bolt release. The M4 buffer tube / receiver extension they are using is rock solid. If it is made by someone else, I don’t recognize it.
Here’s the tail end of the SBA4 on the left vs. the SBA3 on the right.
The SBA4 uses the same buffer tube and slides right on in place of the SBA3 brace.

The result is a very sturdy brace. After comparing the two, I will only use SBA4 braces going forward.

Vortex Crossfire Red Dot Optic and American Defense Mount

I doubt I will ever go past 100 yards with the AK-V and a much more likely engagement distance is 50 yards so a red dot is perfect. I’m a huge Vortex Optics fan and this was a perfect situation for their Crossfire Red Dot mounted on an American Defense AD-T1-L STD quick detach mount. They are my favorite combination of price and performance these days.

By the way, be sure to keep a couple of spare 2032 Lithium batteries in your case or range bag. Nothing dampens a range trip like dead batteries. It’s also why I use a quick detach mount – if the batteries are dead or that optic fails, I am yanking that optic off.

With the AD-T1-L STD mount you are a tad higher than the AK-V’s sights. I plan to watch how they relate at the range so I can ballpark where to aim if the battery is dead and am in a rush. Practice, practice, practice and not just when everything works.

Here’s the Vortex Crossfire Red Dot on the American Defense AD-T1-L STD mount. If you wonder why I use American Defense, it’s for the quality. Cheap Chinese/import quick detach rings shoot loose, don’t return to zero and bend/break over time. AD stuff is rock solid made from aerospace aluminum. Note, you can see our Quick Takedown Pin just above the handguard and I’ll cover that next.

The AK-V Dust Cover Quick Takedown Pin

I had to look up — I built my first Yugo M92 in 2012 and instantly hated the hinged dust cover. I drilled out the rivet and came up with a stainless pin with a ball detent and pull ring to secure the cover. The rest is history. I wound up making pins for the M92/M85, Tula and Bulgy Krinks use the same pin, Vepr shotguns and now the AK-V.

The reason for wanting a quick takedown pin is plain and simple, when you want to clean the weapon or work in the receiver, the hinged dust cover is in the way. To remedy this, you can install our AK-V quick pin and it’s about a 10 minute job if you know how to strip down an AK. This is a quick overview:

  1. Ensure the weapon is empty.
  2. Field strip the weapon like you would any AK, remove the gas tube and the lower handguard so they are out of the way. 
  3. The AK-V’s hinge is simply a 5/32″ roll pin that needs to be tapped/punched out so use something like a bench block to support the weapon and create a hole/gap for the pin to exit into.
  4. Use a 5/32″ roll pin punch and a hammer to tap the roll pin out.  You can save it for the future in case you ever want to use it again for some reason. 
  5. Put the dust cover back in place with the hinge holes lined up and slide in our quick takedown pin.
  6. Re-assemble the weapon.
  7. Done
Here, I have the rear sight block fully supported by the bench block behind it and am using a 5/32″ roll pin punch and hammer to drive the roll pin out.
What makes a roll pin punch different from a normal punch is the dome in the middle that centers the punch on the pin and makes driving the pin out very easy. It also reduces the risk of a regular punch slipping off what you are working on an scratching the finish.
So this is what you wind up with once the roll pin is removed.
This was my first attempt because I am right handed. Having the pull ring there right next to the gas tube locking lever was just too much. I flipped it around and had the pull ring on the other side of the gas block.
This is how I am running it now. The pull ring is on the left / non-operating side and the ring is tucked just behind the handguard.

We have the pins up for sale on our website now. Click here to order one.

Summary

Looking good!

The AK-V was almost done at this point. I still needed to lubricate the weapon and put it in a suitable case. I’ll tell you about that part of the journey in the next post.


This is a four part series on the PSA AK-V 9mm:


If you find this post useful, please either buy something using one of the links to eBay and Amazon. With Amazon, if you click on one of our links and then buy something else – even unrelated stuff like clothes, electronics and groceries – we get credit and it would be hugely appreciated. Doing something like the above will help us fund continued development of the blog.


Great Animated Video That Shows How A Glock Pistol Operates: It Really Clarifies Things!

As the saying goes, a pictures is worth a 100 words. Well, this video is worth a few thousand. I am very, very impressed by the fire control group that Gaston Glock created with the three integral safeties. In talking with a lot of Glock pistol owners, they aren’t very clear on how the pistol operates and now I can share this video with folks.

This example screen shot from the video shows how a case is extracted and then ejected. The level of detail is exceptional. Note how the creator of the video shows you a faint ghost image of the pistol around the components he is demonstrating.
In part of the video, the creator shows you how all three safeties work. The above screen shot is from the part of the video where the firing pin safety mechanism is explained.

Matt RIttman created this animated video and really did a service to the firearms community. The computer animation is excellent and the operation of a Glock 19 Gen 4 is very clear. This is a must see for any Glock or Polymer80 owner. I’m not a huge fan of Glock pistols but I am of pistols with the Polymer 80 frames/receivers because of the grip angle. I’ve now built two and legally registered them in Michigan.

Here’s the Video

It’s only 2:54 long and totally worth your time:

I hope you find this as interesting as I did.


If you find this post useful, please either buy something using one of the links to eBay and Amazon. With Amazon, if you click on one of our links and then buy something else – even unrelated stuff like clothes, electronics and groceries – we get credit and it would be hugely appreciated. Doing something like the above will help us fund continued development of the blog.


What To Do When Your AK’s Barrel Is Too Big For Your Front Trunnion?

A few years ago, I bought a 1969 Polish Radom Circle 11 AKM kit from Arms of America. It has laminate furniture, matching parts and they populated a new Polish Chrome Hammer Forged (CHF) barrel with the front, gas and rear sight blocks. Furthermore, it was headspaced. I double checked that before I pushed out the barrel pin and then the barrel – that’s where things got interesting.

Pressing Out The Barrel

I have a 30 ton H-style hydraulic press with a 20 ton air-over-hydraulic bottle. The thing is a brute and have used it many, many times over the years on gun and car projects. There are a few things you learn over the years – 20 tons is 40,000 pounds and is a serious amount of pressure – steel parts can bend, break or even shatter under those loads. You learn to go slow, watch carefully feel the pump and listen. I also learned long ago to use the air to move the ram quickly but always do the real work by hand for those very reasons – I’ve bent the crap out of stuff in years past because you can’t tell what is going on.

I wear a full face shield when working with a press. I’m not joking when I say things can go bad fast when there is a lot of pressure. When you push out a barrel, you just don’t expect a ton of pressure from a new kit – at least I don’t. I’ve had some real hairy barrel pins and barrels in years past when dealing with surplus… but not on a new kit with a populated barrel … not until now.

Pressing Out the Barrel

As you can guess, the barrel did not press out easily. I had to apply a boatload pressure – way more than average. So much that I put a 3/4″ piece of plywood between me and the trunnion/barrel assembly. I was also checking and double-checking that my barrel press tool squarely on just the barrel and not a part of the trunnion – guys I was nervous.

I reached the point where I knew I was squarely on the barrel and something had to give. I was whacking on the press trying to shock the barrel out and I kept upping the pressure – pump, whack, pump, whack… Finally the barrel came free like a gun shot. Guys- do you remember the old Romy kits where the pins and barrels sometimes felt like you were taking your life into your own hands? That’s what this felt like.

I actually inspected the front trunnion very carefully looking for cracks. I then inspected the chamber end of the barrel – nice and smooth – remarkably smooth. No signs of galling. Ditto on the inside of the trunnion. I suspect that someone was using some kind of press system that included a barrel support and slammed that new barrel in using a level of force I couldn’t do without damaging parts. I noted to myself that reassembly was probably going to be just as colorful.

Building The Kit

Nothing new about building the kit – I had fun. In the below photo, the front trunnion and rivets are just sitting there. I was mocking things up and they are not actually set. I installed the trigger guard taking care to orient the selector stop properly and using a rubber band to keep the assembly together as I used my press and an AK-Builder trigger guard rivet jig to do the job.

The rubber band keeps the receiver down on the trigger guard jig so the rivet, selector stop and trigger guard all stay in place while you move around. The AK-Builder jig really does a nice job.
Here, everything is drilled and seems good to go.

So let’s get back to the main point of this blog post and why you are probably reading this – what do you do when the interference fit is too tight and the barrel will not go into the trunnion all the way.

Life Got Colorful Trying to Press The Barrel Back In

Yeah, that tight fit came back to haunt me. I tried polishing the trunnion and applying non-seize. Usually this works for me but when I went to press the barrel back in, it would not go. I saw the barrel begin to deflect in the press and immediately stopped. Let me explain what I mean by deflect – a material will bend so much and spring back into place. When I saw the barrel begin to deflect, I immediately stopped – it was taking way too much pressure and I was risking bending the barrel permanently. It was time to press the barrel back out and rethink the situation.

Here’s my barrel and my receiver. I double-checked the barrel to make sure I did not bend it – I got lucky. I always get worried if I see the barrel start to deflect/bend — they don’t always return to true.

So, what this confirmed for me was the someone slammed this thing together – hard. An AK barrel is press fit into the trunnion. To do this, the barrel is a tad bigger than the hole made for it in the trunnion by about 0.0010-.0026″ (0 .025-0.065mm) according to Robert Forbus who is a true machinist and has shared a ton with the AK community – click here for his page). At the tighter end (around 0.002″) it is getting hard, if not outright impossible, for someone to press the barrel into the front trunnion without the proper specialized barrel press equipment that supports the barrel. I have a big press but nothing to properly support the barrel in these high-pressure situations. It would likely warp like a wet noodle if I just kept adding pressure.

I don’t own a machine shop but I am a redneck with a shop. I needed to open up the barrel channel in the trunnion and opted to use an OEM brand brake hone. Why? Because I’ve used these small bore hones in the past for other things and was pretty sure it would work for this too.

I also need to point out that I have no way to accurately measure the barrel or the trunnion so I figured I would remove a bit and try to install the barrel, remove a bit and try, over and over until it went in. The next picture shows my OEM hone (and the Lisle is virtually identical):

This is an OEM Tool brand brake hone and the Lisle unit looks virtually identical.

Take a look at the above picture – by tightening the knurled nut at the base of the spring, you can apply more and more pressure to the 220-grit stones at the end of the arms. (The Lisle tool’s stones are 240 grit purely FYI – not a big difference.) I just used the basic pressure and did not increase it. Life lesson for me years ago – it’s easier to take more material off than it is to put it back on.

I applied cutting oil to the trunnion liberally and then slid the hone in and out with my drill on slow speed. I would do this for a bit, clean stuff, and then tested how far the barrel goes into the trunnion by hand and then keep removing more. This is not the time or place to get impatient.

By the way, OEM makes fine 400 grit stones that you can swap into place and use to polish the interior further if you . I got the job done with the 220 grit stones and silver Permatex anti-seize compound. If I ad the 400 grit stones handy at the time, I would have done so but I did not. Also, be sure to clean out the grit/dust before you try to reinsert your barrel.

My one action photo and it was blurry! You get the idea. Keep it lubed with the cutting oil and keep moving the unit in and out so you are polishing the whole barrel channel.

This is a down and dirty “git ‘er done” approach and will make machinists cringe. I go slow and test — I would push the barrel in, test and the press it back out if need be. [Click here to see how to make a barrel backout tool].

*IF* you see a bur or squished rivet protruding in the trunnion, then carefully grind that down with a Dremel and polish with the hone. Don’t try to do it all with the hone or you will be removing material elsewhere that you may need – the arms are spring loaded and independent so they will go where ever they can. This is a pro and con.

After a couple of tries, the barrel went all the way in with the press. To be safe, I confirmed the head space using real Manson brand 7.62×39 gages (use real gages folks and treat them well – don’t go cheap). The barrel headspaced just fine so I pressed in the pin and finished the rifle up.

Bottom line, a brake hone can help you carefully remove steel from the front trunnion and get a tight fitting barrel to go in. It worked wonders on this 1969 cold warrior that is now ready to go to the range.

The 1969 Polish AKM rebuilt and ready for the range!
The rifle is wearing one of our Polish Tantal/AKM grips as a 922r compliance part – we make them by hand here in Michigan from a glass fiber reinforced polymer.

Click here to learn more and order one of our Polish Tantal/AKM grips.


One of our fire control group retaining plates. that fits all AKMs and rifles that use standard AKM fire control groups.

It also has an ALG fire control group – they are awesome triggers – and one of our fire control group retaining plates. Click here for our fire control group retaining plates.


If you find this post useful, please either buy something using one of the links to eBay and Amazon.  With Amazon, if you click on one of our links and then buy something else – even unrelated stuff like clothes, electronics and groceries – we get credit and it would be hugely appreciated.  Doing something like the above will help us fund continued development of the blog.


Upgrading To Truglo TFX Pro Sights On Your Glock Compatible Pistols Including Polymer80s

The factory sights on Glocks leave a lot to be desired in my opinion. I like fiber optic sights but also want sights that generate their own light at night. Fortunitely, TruGlo has upgrade sights for Glocks that can do just that. They are the TFX Pro model sights.

The fiber optics use daylight and are very nicely visible. I know there is a trend for red dot optics on pistols but I would rather opt for simplicity. The other really nice thing about these sights is that they use tritium to generate their own light at night – some sights make you charge them with a flashlight but not these. The only issue to bear in mind is that the Tritium isotopes with flouresce for about 10 years and then be dead. My thinking is that is a loooonnnngggg time from now plus it just would affect the night use at that time.

So, let’s get to it, Installation has two discrete steps – replacing the back sight and then the front sight. Both of these can be done by most home gunsmiths because the Glock design is pretty forgiving. Some pistols require a top notch MGW sight pusher to be removed but not the Glocks. The below is based on my experience installing these sights both on my Polymer 80 based Glock 17 and 34 Gen 3 compatible pistols.

Tools & Supplies

I’m kind of like Tim The Toolman Taylor, if you remember the show Home Improvement. I like tools and don”t need much an excuse to buy one in order to try and do the job the right way. When it comes to the rear sight, some guys use a 3/9″ piece of Delrin or wood dowel to tap the old sight out. Because of my hand tremor, that’s risky for me so I looked into sight pushers and decided to go with the Wheeler Engineering Armorer’s Handgun Sight Tool.

For the front sight, a dedicated Glock front sight tool can make the job a ton easier because they are shallow and have a magnet that will hold the tiny screw in position while you get it started. A regular nut driver is too deep and the tiny screw will fall into it vs. being held nicely in position.

You will need some medium Loc-Tite to secure the front sight screw.

Tape to wrap the slide and protect it is a recommended. I use painter’s tape.

Getting Started

  1. Make sure the weapon is unloaded and clear – no magazine and nothing in the chamber.
  2. Remove the slide
  3. Remove the spring and the barrel to get them out of the way – you don’t need to remove anything else.
  4. Wrap slide with painters tape to protect it from scratches leaving the two sights exposed.
  5. I did my back sight first and then my front sight.

Procedure – Back Sight

  1. To remove the back sight. I followed the instructions with the Wheeler unit and flipped the pusher over to use the angled face. Mine was set for straight-edged sights from the factory.
  2. I also oiled all of the threads on the Wheeler.
  3. I secured the slide in the Wheeler unit taking care to make sure the slide was the right height so the pusher would engage the sight and not bind on the slide.
  4. The factory Glock rear sight pushed out incredibly easily. I can see why some guys just drive them out. However, I really liked the control the Wheeler gave me.
  5. I then lined up the replacement sight and pushed it into place – checking over and over and making minor adjustments to ensure it was in the center.
  6. The Truglo has secured by a set screw that I backed out, put a dab of blue/medium Loc-Tite on and then tightened down.
  7. That was it for the back now on to the front.

Procedure – Front Sight

  1. Turn the slide upside down and you will see a small hex head screw that must be removed. I used my Glock Front Sight tool for that.
  2. Push or tap out the original sight.
  3. The replacement TruGlo unit is a tight fit I had to firmly press it into position. It is an interference fit so don’t remove a ton of material so it just falls into the slot cut in the slide. It needs to be pressed in as this helps with alignment and retention.
  4. Put blue/medium Loc-Tite on the screw before reassembly. This is mandatory. If you do not, it will shoot loose over time and you will lose your front sight.
  5. Use the Front Sight tool to reinstall the screw with the Loc-tite and tighten it down.
  6. Done.

Conclusion

I really like the TruGlo TFX Pro sights. They are very visible both during the day due to the fiber optics and at night due to the Tritium. They were well worth the investment. I hope this helps you out.


If you find this post useful, please either buy something using one of the links to eBay and Amazon. With Amazon, if you click on one of our links and then buy something else – even unrelated stuff like clothes, electronics and groceries – we get credit and it would be hugely appreciated. Doing something like the above will help us fund continued development of the blog.

Amazon product links are at the bottom of the post.