Tag Archives: Polymer80

Polymer80 PF940CL Review

A reader emailed me the other day asking how I liked my PF940CL and the short answer is that I do like it. For those of you who aren’t familiar with it, the PF940CL is a hybrid design using a Glock17 upper but having the lower that uses Glock 17 parts *but* uses Glock 19 magazines. The CL stands for “compact long” and it makes for an interesting design.

Like other Polymer80 kits, it comes with the blocks you will need, drills and a mill bit. You need to supply all of the internals and the completed slide assembly. The color I selected is known as “cobalt” and I like it.

Building It

It goes together like all other Polymer80 kits. If you haven’t built one before, I would recommend closely reading their assembly guide [click here for their page] and you can also check out some of my past posts [click here for them].

Two Differences

There are two things that are different that you do need to be aware of:

First, it uses Glock 17 parts in the lower but it does not use the traditional Glock leaf spring for the slide lock like you see in a Glock 17. Instead, it uses the same coil spring that a Glock Gen 5 pistol uses [Click here for more details].

Second, the magazine funnel is unique to the CL design and will not use funnels made for other Polymer80 models. I am running a SLR funnel made for the PF940CL and really like it. There are three reasons I like funnels:

  1. It does help guide the magazine up and into the mag well easier.
  2. I do like using funnels to protect the lip of the magazine well. Because of this mindset, I really prefer aluminum to the various 3D printed mag wells. The SLR funnel is aluminum for example.
  3. I like the support for my pinky finger. Yeah, I know it sounds crazy but normally I don’t like Glock 19-sized grips because my pinky finger is daingly in the air (I wear XL-sized gloves). My having a funnel, my pinky rests comfortably on the angled part of the funnel.
This is the SLR mag well made specifically for the PF940CL. [Click here for their page]

End Result

Take your time and do the build the right way. The end result is a very comfortable pistol that has a shorter grip but has the longer slide. I like it.

Here’s my completed PF940CL. I later replaced the TLR-2 HLG light with a smaller TLR-4 later.

Note, if you folks haven’t heard, Polymer80 is making and selling both serialized complete lowers and even complete pistols if you do not want to go the route of building your lower.

I hope this helps you out!


Note, I have to buy all of my parts – nothing here was paid for by sponsors, etc. I do make a small amount if you click on an ad and buy something but that is it. You’re getting my real opinion on stuff.

If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at info@roninsgrips.com.


Polymer80 and Glock Parts Vendors

When you want to customize your Polymer80 or Glock, or you need replacement parts, there are a number of solid vendors you can go to:

Those are all reputable vendors and aren’t going to sell you inferior counterfeit products.

What Size Are The Drill Bits For Polymer80 Glock Frames

Hi folks, a gentleman wrote me the other day that he had a PF940v2 Polymer80 frame but not drill bits and asked what size he needed. I checked and the rear trigger housing and front locking block pin needs a 3mm drill and the trigger pin needs a 4mm drill – note that this can also be written as M3 and M4 respectively. You’ll see M3 and M4 on the frames for example.

This was from my PF940CL build. You can see the two M3 (3mm) holes and the one M4 (4mm). Note, it is very important that you just drill a hole in each side. Do not try and drill straight through or you risk an alignment error and then things aren’t going to fit properly.

I visited the Polymer80 How-To page that has the frame completion guides available in PDF format for you to read and print. I quickly browsed the guides for all of the Polymer80 Glock-compatible frames (PF9222, PF940SC, PF940C, PF940CL. PF940V2 and PF45) – they all use 3mm and 4mm drill bits.

If you buy bits, you either want them a tad undersize (such as 2.99 and 3.99) or at the nominal spec for 3.0 and 4.0. If you get a cheap import bit that is too over-sized, you will run the risk of the pins being too lose. The bits that come from one of my Polymer80 PF940v2 kits measure 2.990 and 3.986mm according to my micrometer.

These are our 3 and 4mm bits sized 2.95-2.97mm and 3.95-3.96mm respectively.

We do sell quality cobalt bits that are excellent for this work. Click here for our listing.

Conclusion

Polymer80 frames are fun builds and you can create reliable and accurate pistols. The caveats are that you should read the instructions, take your time and use the right drill bits.

I hope this helps you out.


Note, I have to buy all of my parts – nothing here was paid for by sponsors, etc. I do make a small amount if you click on an ad and buy something but that is it. You’re getting my real opinion on stuff.

If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at info@roninsgrips.com.


Polymer80 and Glock Parts Vendors

When you want to customize your Polymer80 or Glock, or you need replacement parts, there are a number of solid vendors you can go to:

Those are all reputable vendors and aren’t going to sell you inferior counterfeit products.

How to Find Polymer80 Frames and Parts During The Current Panic

There’s no two ways about it, people are scared. They are getting fed a constant stream of bad news and violence from the mainstream media and are buying firearms. There’s also a ton of people who are building firearms. I’m a fan of Polymer80 frame based pistols due to the improvements they made so I’ve written a lot of posts about them. What I am hearing from readers of my blog is that they are having trouble finding ready-to-go kits to build their desired pistol.

I did some digging and it is true – the various all-inclusive kit vendors are all either out of stock or running long back orders. This does not mean you are out of options, it just means you are going to do more planning and buy parts from various places vs. one-stop-shop.

Step 1: Decide on the model you want

Your first step is to decide what type of pistol you want to build. The Polymer80 frames enable you to build a pistol that uses Glock parts for that some model. There are tons of models due to differences in size and caliber. There’s a summary of models on Wikipedia that you can use as a starting point.

Do Not Buy Any Parts Yet!

Step 2: Determine The Polymer80 Frame You Need

Next, determine which Polymer80 frame you need to build the model you want. You need to know this because sometimes a given frame requires a different generation of Glock parts.

Also, it’s up to you to decide if you want to buy an 80% frame that is not yet a receiver that can be mailed to you. In some areas of the US, this may not be legal and you must understand the laws and regulations that bind you when it comes to building a pistol. For example, Polymer80 discloses on their site that they can’t ship to Washington DC, New Jersey and Washington at the time this blog post was written.

Another option is to buy a serialized completed receiver. It is treated like a firearm because in the eyes of the US ATF agency a receiver is a firearm. This means you can buy it online but it will need to be shipped to your FFL who will then do the transfer. On the pro side, it’s ready to go and already registered.

With that said, Polymer80 doesn’t have a clear table on their website that says “If you want to build this type of pistol, buy this frame and these generation parts.” I thought they did at one point.

The following is a quick summary of mine to point you in the right direction getting started. I really want you to confirm it because I might have made a mistake during the compilation of the information so *please* double-check before you buy stuff:

Glock ModelsPolymer80 FrameGeneration
of components
3-pin 9mm G17, G34, G17L
.40S&W G22, 35, 24
.357Sig G31.
PF940V2Gen 3 – 3 pin
9mm G19
.40 G23
PF940CGen 3
9mm G26
.40 G27
PF940SCGen 3
9mm G43PF9SSGen 4
10mm G20SF (short frame)
.45 G21SF
PF45Be careful and research what works for these two. I read mixed comments about the builds.
This table was partially generated by looking up the frames on Polymer80’s own website plus Google as well.

Step 3: Read The Polymer80 assembly guide

Next, before you buy anything, read their assembly guide and see if they have any suggestions (or warnings) about parts and tools that you will need. Honestly folks, don’t skip this.

Click here for the Polymer80 page with instructions by model.

Make a list of the tools you are going to need and what you may need to buy.

Step 4: Develop a parts list

For all of the Glock models, you can search and find an exploded parts diagram. Google makes this real easy – there are tons of them online. As mentioned previously, you need to focus on your model and the specific generation of parts called for. There are other generations so be careful.

You need to compare the parts from the diagram(s) and the build instructions to create your final list.

Step 5: Figure out your approach to buying the parts

You can check around for complete kits that have everything you will need but I think you will find they are either out of stock or on backorder. For reference, I’ve had very good experiences with 80P Builder and F&F Firearms for complete kits.

The more likely strategy is that you will need to buy you parts and hopefully you can get some collections of parts vs. needing to buy every part individually.

The frames are readily available if you do a bit of shopping around and often these vendors sell other relevant parts as well. Check out:

For the slides, you can purchase them stripped with no additional parts, bundles where the vendor may offer a discount for the slide and additional parts and some, like 80P Builder, offer completely assembled slides.

If you are a new builder and you want reliability, go with all Glock parts. Literally, other than the frame, go Glock. That will give you the best chances of building a reliable pistol on the first try provided you do your part and build it correctly.

There are tons and tons of aftermarket parts vendors and when you start combining them weird things can happen as the various vendors’ perspectives on allowable tolerances stack up and cause problems.

Think of it this way, build the base pistol and get used to it. You can then change our what you want down the road. Building something that sounds sexy due to cool photos, ads and marketing may bring you a lot of grief as you begin your journey learning about these pistols first.

So, read around and see what vendors have to offer. Also check Gunbroker and even eBay. Pay careful attention to sellers’ ratings and be mindful of my cautions above.

Bottom line, it will take some additional planning and research on your part but you can still assembly a Polymer80 pistol.

Step 6: Finding Magazines

There are some cheap crap magazines out there I am sorry to say. Either go with Glock, Magpul or ETS. Remember my comment above? You might want to start with Glock out of the gates and buy at least two magazines. If it’s made by another vendor than the three I listed, don’t buy it.

The good news is that it is pretty easy to find magazines right now and their prices really haven’t changed much. In addition to the vendors above, check out Gun Mag Warehouse.

Conclusion

I hope this helps you out!


Note, I have to buy all of my parts – nothing here was paid for by sponsors, etc. I do make a small amount if you click on an ad and buy something but that is it. You’re getting my real opinion on stuff.

If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at info@roninsgrips.com.


Video: The Ultimate Polymer80 Glock Troubleshooting Guide By Tactical Toolbox

Folks, I am always trying to learn more about how to troubleshoot Polymer80s and improve reliability. There is fellow who goes by “Tactical Toolbox” on Youtube and he produced this excellent video on troubleshooting these pistols. It’s definitely worth watching!

Be sure to check him out on Youtube and subscribe to his channel.

I’ve written quite a few posts on Polymer80 pistols and if you’d like to see a listing of them in a new browser tab, click here.

Please note that all images were extracted from the video and are the property of their respective owner.

If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at info@roninsgrips.com.


Our Polymer80 Barrel Block Sanding Kit

We have a sanding toolkit to help you quickly and accurately clear out the barrel block area.

We have a sanding kit available for Polymer80 pistol builders that is designed to help you quickly and accurately sand the barrel block area so you can have a smooth functioning pistol. Click here to learn more.

A review Of my Swenson Glock 17 Slide – It’s Solid

I bought a basic Swenson slide almost two years ago and it’s been solid. Part of what attracted me to it was the beveled nose that allows for easier insertion into a holster. At any rate, I’ve had guys ask me if Swenson slides are any good and my experience has been positive plus from what I have read, most guys find them good. Let me put it this way, if I found a good deal on one to host a RMR optic today, I’d buy it.

The Slide You See

When I first installed it on my first Polymer80 PF940V2 G17, no fitting was needed. However, when I built the PF940CL that it is on now, I did need to use Goodson 400 and then 800 grit lapping compound to get a good fit. Initially there as some binding and now it is just nice and smooth. [Click here if you want to read more tips]

That is the only tuning I’ve need to do. The channel spring liner and all slide parts went in easily and I’ve not had any problems. It’s hosted both it’s current Storm Lake barrel as well as a threaded barrel that I bought from 80P builder with no problem. All in all, it’s worked just fine.

View of the ejection port side. Just a solid basic slide.
Here’s the other side.
Here’s the bottom. Other than the Storm Lake barrel, I think all of the other parts are OEM Glock.
I really like the beveled nose and prefer it for carry pistols. Also, Streamlights are my go to brand for light and laser combos. The TLR-4 works great here and any of the TLR series would since this is a full size pistol. The CL just has the shorter G19 grip to aid with concealment.


So, if you are hunting for a slide for your Glock or Polymer80 build, take a look at Swenson models. They have quite a few designs to select from now including fancy windows and various optics cuts. Just remember, if you are doing a Polymer80 build, look at slides meant for Glock Gen3 models.

The problem these days is finding them. The whole market is in pandemic shock – either hit with supply chain problems or unprecedented demand for guns, ammp and parts. With that said, I did some searching and see Swenson slides either at Midway USA or on eBay and the following is a real time search of eBay for themL


I hope this helps you out!


If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at info@roninsgrips.com.