Category Archives: AKBuilds

How to build AK/Kalashnikov-type semi-automatic rifles and pistols.

Pandora’s Box Is Open: 3D Printing Of Firearms

You may be thinking I am kind of late to the game with a post about the 3D printing of firearms but you’d be a bit wrong yourself. This domain is alive and exploding with designs that range from almost entirely 3D printed to sophisticated hybrid designs where some parts are printed and some key parts are leveraged from off the shelf suppliers such as Glock slide assemblies and AR uppers.

Just look at these examples:

This is a rendering of the FMDA DD17 Glock 17 compatible frame STL file.
This is a rendering of the FMDA DD19 Glock 19 compatible frame v1.2 STL file.
This is a rendering of the Mac Daddy frame STL file.
The authors of the Mac Daddy project provide the above photo in their Zip file as an example of the finished weapon. Note, this is not mine – I don’t even own a 3D printer!

There are just tons and tons of designs – AR receivers, AK receivers, vz Scorpion receivers, modern polymer pistol lowers … the list goes on and on.

It’s interesting to look at this vibrant community as a one step removed observer. I am intrigued by the innovation and the designs but I also have zero time to learn 3D printing at this point. Between my day job, Ronin’s Grips, family and the need to sleep at least a few hours every night, there is no free time. My wife also made it clear to me in no uncertain terms that I am not to buy a 3D printer — which really doesn’t phase me because I have no time as I mentioned.

The reason I wanted to take a moment and write this post is so that those of you who are curious can dig into the many how-to guides and access the tons of designs that are accessible at this time. It’s hard to say what way the winds of regulation will blow in the United States or a given state for that matter. In some countries, even the possession of these 3D design files would get you in huge trouble.

With that said, the following links are provided for educational purposes only. Please understand the laws and regulations in your area before you download anything or try to build a weapon. You assume all liability.

Getting Started

The first place you will want to visit is CTRL+Pew. They also have their own getting started guide online that you will want to read plus links to other guides and tutorials.

Where to find the files?

In addition to CTRL+Pew mentioned above, there are tons of download links where people are sharing/replicating a huge “Print2a” repository plus have photos and links to individual designs:

Don’t ask me questions!!

Honestly folks, I am not kidding. I find this topic fascinating from an engineering perspective but I have no plans to get into it. Consider this blog post as an introduction and you will need to take it from here.

For all the authors cranking out these amazing designs – rock on! I seriously enjoy seeing them.

Lastly, why did I mention Pandora’s Box in the title? Because I highly doubt the proponents of gun control will ever be able to close the box again.


Again, the above links and information is provided for educational purposes only. Please understand the laws and regulations in your area before you download anything or try to build anything. You assume all liability.

All renderings and the photos of the Mac Daddy are from files that claim to be in the public domain. I do not own them.

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. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.


What are rear stock options for SDS Lynx 12 Gauge shotguns?

A fellow messaged me the other day and asked what options he had to replace the light fixed stock on his SDS 12 gauge shotgun. I told him that he has a lot. The rear of an SDS is very similar to an AKM or AK-74.

The rear piece that holds the stock in is called a “trunnion” they are what provide the real strength in the sheet metal receiver. The stock is held in place by the two screws you see. Be sure to use a blade screw driver bit that completely fills the slot. You can see that whomever installed the screws at the factor did not do this and slightly deformed both slots by using an undersized screwdriver or blade bit.
You may need to use a wood dowel, or whatever you have handy, to tap the stock out. I like using a hardwood dowel because it doesn’t bend or scratch things all up.
I used a Rifle Dynamics adapter that lets you convert from the AK-rear to an AR/M4 buffer tube. Both the Rifle Dynamics adapter and the one sold by PSA are very well made.

With the rear stock removed, you can use any AKM/AK-74 traditional wood or polymer stock that you want or adapter to use an AR-style stock. Read up online before you buy because there are tons and tons of options and combinations for you.

I hope this helps you out and here are a few examples for your consideration:


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Introducing 1/2″ and 3/4″ Pull Rings For Our Quick Takedown Pins

When I originally designed our Quick Takedown Pins for the Yugo M85/M92 and then also the Bulgy/Tula Krinks, PSA AK-V and Vepr 12 shotgun, I used my hand size as a gauge for making a pull ring big enough. Guys have asked me repeatedly over the years for smaller pins but I could never find them made well enough that I felt good about carrying them — until now!

This is my AK-V with its quick takedown pin with the standard size 1″ ring installed.

This last time when I placed an order with the machine shop that makes my pins, I asked if they could do custom heavy duty 1/2″ and 3/4″ pull rings from stainless steel with a black oxide finish and they said they could! It cost a fair penny because I needed to order a boatload of each but here they are as an accessory if you want to purchase them … please purchase some 🙂

Here are the three rings side by side. The pins all come with the 1″ standard ring installed.

The 1″ and 3/4″ rings are very beefy. We had to go to smaller gauge wire to do the 1/2″ rings but they should work just fine – it’s really the pin itself that does all the work.

Click here to go to the page with all of the pins and rings if you would like to place an order.


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. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.


PSA Had Both Yugo M70B1 and M70AB2 Parts Kits – But Are Sold Out Now

11/28/2020 – This is an old post. Please note that both kits are sold out at PSA. I would be highly surprised if they get more in but who knows.

Hi folks, I’m a fan of Yugo AKs and have been for some time. I wanted to do a quick post to let you know that both fixed stock (M70B1) and underfolder (M70AB2) kits have hit the market at a good price. You will need to build/buy a receiver, barrel and 922r parts to complete them.

Here’s a photo from PSA of one of the M70B1 kits. Click on the image to go to the order page.
This is a photo of one of the PSA M70AB2 underfolder kits.

If you are interested in building a Yugo AK, you might want to consider snagging one of these. I suspect they will sell pretty quick.


As a reminder, PSA has their own line of AK rifles and accessories in case you want to check them out.

4/24/2020 Update: I received my M70B1 and it was in pretty good shape and the numbers matched. In other words – it’s not all rusted together. All the parts are in one bag and the wood is dinged up but it’s buildable. I hope to get some photos later — let me put it this way, I’m debating whether to buy a second or not.

PSA AK Webstore Links

Interested in an American made AK? Consider Palmetto State Armory (PSA) as a source. Click on the following links for the associated webstore categories for AK-related rifles, pistols and parts at PSA:


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. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.

Great Deals On Pistol Braces and Pistols With Braces At PSA

When the ATF reversed the ruling about braces and enabled folks to use them however they saw fit, the demand and supply of pistol braces went into orbit. I have carpal tunnel and a hereditary tremor so for me, using a brace is the only way I can wield a heavy pistol – such as one based on an AR, AK or MP5 type of action.

Examples of Braced Pistols

SB Tactical’s PDW brace is great on AR pistols
IWI Galil Ace in 7.62×51 with a SB Tactical SBA4 adjustable brace
PTR PDWR .308 pistol with a SB Tactical folding mechanism and SB Tactical SOB brace

Palmetto State Armory (PSA)

PSA has come a long way. I’ve used them as my go-to AR parts supplier for years and now they have great deals on parts, kits, receivers, and firearms. They also offer some great deals on braces – by themselves as parts, as part of a kit offering or even on firearms.


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. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.

Brownells Has All Kinds of Metal Finishes And Surface Preparation Supplies

Folks, if you are looking for supplies to finish your firearm, Brownells is a great source. I’ve done business with them for years and they have provided me great technical support as well as customer service. If you are considering a spray on finish like Alumahyde (their own product), Cerakote, Duracoat, or Gunkote plus other finishes like cold bluing, hot bluing, color case hardening or parkerizingBrownells has a ton of options for you.

Both of these rifles were finished using Duracoat’s spray on finish. You really needed to blast the surface, make sure it was very clean and then allow the finish to cure for a week for it to be durable.
Baking on Molyresin over manganese park. That’s a M92 with a long barrel in the front and a M72B1 in the rear from back in the days when I had free time 🙂

These days, I do a base surface preparation of manganese parkerization and then Norell’s Molyresin on top. The park creates an ideal surface for any sprayed on finish like Alumahyde, GunKote or Molyresin to stick.

The following are some great examples of products they carry:


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. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.


Why Does the Color of Grips and Handguards From Ronin’s Grips Fade And What To Do About It?

I’ve had guys ask why the color of my grips or handguards seem to fade with time. The short answer is that it has to do with the liquid wax finish oxidizing and not the plastic – the color is actually in the plastic. You see, we sand every grip and handguard to get rid of mold imperfections and then we blast each with abrasive media (currently it’s Black Beauty or Black Magic depending in the store I go to) and that turns the plastic almost white as you can see in the photo above. We blast the surface to create a very sure grip when you grab hold – your hand doesn’t slide easily. The polished finish we used to do resulted in a surface that is slick when wet due to sweat, water, blood, etc.

So, the blasting abrades the surface and messes up the colors being reflected back to your eyes. To solve this problem, I tried a ton of different oils and waxes and the best was Atsko Sno-Seal. It really brought out the color and it did not fade – or at least I never saw it fade. The problem is that Sno-Seal is a paste wax and I have carpal tunnel. Rubbing it into grips and handguards every day over and over was killing by wrists so I had to stop it.

This pushed me back to the drawing board and this time I looked at liquid waxes. Some of them really smelled as the liquids evaporated and the best option I could find find was the various butcher’s block finishes that combine mineral oil and a wax – often a bee’s wax. This stuff goes on like a dream but does fade with time. There’s nothing wrong with the color – it’s just the finish oxidizing and drying out.

What to do about the fading?

As mentioned above, the finish I apply will fade. The good news is that the owner with a number of options and I’ll shorten it down to the four I recommend:

  1. Buy Sno-Seal and apply it. This stuff is awesome for boots and I actually had it for my boots when I tested it. It’s my #1 recommendation and what I do for furniture I make for myself.
  2. Shoe polish holds up really well and you can nudge the colors/hues one direction or another depending on the color of the wax. This goes on pretty easy and seems to last. Just buff it well so you don’t get any color on your hand. I’ve had very good luck with Kiwi products.
  3. Any fine wax for boots, leather, wood or preservation ought to work. Just follow the directions. Absolutely do not use super thick floor wax or it will be a disaster as one customer found out.
  4. Put another coat of butcher’s block conditioner on it. Easy to apply but it will not last.
Atsko Sno-Seal is my #1 choice. Kiwi shoe polish works great. Howard’s Butcher Block Conditioner is what I use in production and is also what fades with time.

How to Apply Sno-Seal

My first recommendation to customers is always Sno-Seal. It takes just a little it to polish a grip or handguard plus you can use it to waterproof your boots.

I did this corner at room temperature and you can tell it takes a bit more effort to rub it in and buff it off.

You can either warm it up on your hand and then rub it in or you can use a heat source to warm up the grip or handguard just a bit – meaning warm to the touch not hot – and it goes on even easier. When I did the M72 hanguard set shown, for example, it was warm after about a minute and 20 seconds in our microwave. You rub the wax in and buff it off – done.

Hello Mr. Microwave! You can optionally warm your piece of furniture up with a microwave, oven turned on at 150F or less, hair dryer, etc. You want it to be warm, not hot. If you can’t pick it up, it’s way too hot. The plastic will not begin to deflect until around 250F and there’s no way you can pick that up hence the rule of thumb. [Click here if you want to read about a heat test we did]
So here’s the finished handguard set after I buffed off the remaining wax.

Again, if you ask me what I do for my own grips and handguards, it’s Sno-Seal and I rarely use extra heat – usually just I just warm it up with my hands and rub it in. Sno-Seal lasts the best of anything I have found.

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. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.


Photos of Rick’s Polish AKM-Beryl Transitional Rifle

Rick sent me these cool photos of his new build and I had to share them. He also gave me some details as well.

The rifle has a “Polish FB Radom barrel, trunion, and optic rail. Childers polish cg1 receiver. To stay with the polish theme, I found an unissued polish soviet era laminate stock. I was originally going to use a bakelite grip. But, since this is a hard use rifle. I wanted something more robust. But correct for the polish theme. Your grip delivered and then some. So here are some pictures of my polish AKM-Beryl transitional rifle. At least I call it that for lack of a better term. “

Yes sir Rick – that is definitely one slick build!


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. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.