Thursday, September 16, 1999

The Complete Guide to Building an AK 47

This blog will teach you how to build an AK 47, by yourself, in your garage, with a minimal amount of tools, ak parts and knowledge - LEGALLY.  Not a full auto, pull the trigger and dump an entire mag type.  (That's not legal.) But a semi-automatic version. That fires once every time you pull the trigger.

It's completely legal to build your own "legal" firearms at home. As long as you do it YOURSELF. Meaning no one else can help you physically. And you follow the rules of making ONLY legal, semi-automatic firearms. Using your own ak parts.

(The various sections of this tutorial include simple methods that might be used if you had a minimum of tools. Other methods are more sophisticated, might have been developed after some of the older simpler methods, but may require more advanced tools. At the minimum you need a drill and some BIG hammers. But preferably a 12 ton press from Harbor Freight.

For a complete step by step tutorial I would highly suggest contacting for his excellent Word and .pdf file tutorials. And (buildyourownak on youtube) for his incredible video build tutorials.)

I built the rifle in the picture above. (And several others pictured in this blog.) With a minimal amount of tools. Over the course of a few days. It was probably one of the most satisfying accomplishments of my life. How many guys can say "I built an AK47 with my bare hands."?! Not many. But probably more if they only knew how easy it was.

Builders in the Khyber Pass on the Afghanistan/Pakistan border have been building them for decades. With nothing more than hammers, files and a little ingenuity:

The AK 47 has been the most successful assault rifle of all time. It's medium to large caliber has great stopping power and it's simple design insures that it works EVERYTIME. In EVERY environment:


The following posts detail links and information regarding building your own AK 47. I hope you'll have as much fun and satisfaction as I have building my own AK 47's from parts. But please follow your own state and local laws concerning firearms. And be safe.


Wednesday, September 15, 1999

Basic Components

Underfolder Trunnions Below in order:

Top one is Romanian

Middle one is Polish

Bottom one is Yugo

Monday, September 13, 1999

Building Instructions

922r Compliance:

In order to stay within the law your AK can not have more than 10 foreign made parts in it. Here are two easy calculators that explain regulation 922r and make it easy to figure out which parts you want to replace with US ones. Alot of the typical parts replaced are parts you'd like to replace anyway. Some common ones are the trigger group which makes up alot of parts towards your 922r compliance. And the piston. But my advice is to skip the piston replacement if you can. And replace something else that can simply be dropped in. Like a muzzle break or magazine component:

Building Instructions:

There are many different ways to build the many different AK variants. But most methods are applicable across the different types. My advice is to read as much as you can about the different build techniques. So that you can choose the ones that are right for your tool and skill set. There are basically two different types of AK's - milled and stamped. Milled is a receiver that has been cut from a solid block of metal. Stamped has a receiver made from bent sheet metal. You'll probably be starting with the latter. Further, most countries standard issue military AK47's are very very similar in construction. With the exception of Hungarian. And especially Yugoslavian. (Which isn't bad. The Yugo is arguably the strongest AK made. As it starts with an RPK trunnion. And all around beefier components.)

The main difference in your build will be stamped versus milled. And standard AK vs Yugo. And whether you use rivets or screws to attach the receiver together with the rifle. 

With a stamped build you will be starting with a replacement stamped sheet metal receiver. (Or building one from scratch - also called building from a "flat".) Or you will be welding a milled receiver back together. Or starting with a new milled replacement receiver. Then you will either be attaching your receiver with rivets (the traditional way) or with screws. I prefer rivets. But you'll have to decide that on your own:

Build an AK from two different perspectives

Project guns
Building a receiver from a flat:
AK building notes

Romanian AK info

AMD-65 build

FCG removal

How to polish the FCG

How to remove furniture

How to use a trigger guard Jig

AK receiver bending

All-thread barrel install

How to make an electronic bore cleaner

Rust bluing

Hot bluing

AK-47 parts diagram

Templates for receivers and tooling/jigs

AK barrel reference dimensions

Tap/drill reference chart

How to load a 75 rd chinese drum magazine
Adjust a side mount optics clamp

AMMS pivot pin fix

How to fix Trigger slap

How to build a bullpup

The 555th receiver flat bending jig

AK-47 bolt disassembly

Arizona Response Systems  - This collection of build instructions are incredible:

Headspacing information

CIP website

SAAMI website
How to check headspace .doc
How to check headspace video
Resetting headspace with oversize barrel pins

Headspace reference guide:

Trunnion hole location trick:

Put masking tape over trunnion and mark it with side of pencil:

Center-punch holes

Remove tape

Drill very small pilot holes

Open your holes

Sunday, September 12, 1999

Youtube Building Videos

How an AK-47 Works

Buildyourownak on Youtube ( ) has the most complete collection of videos on building an AK. I highly recommend his DVD in the first section of this blog. They cover almost every aspect of an AK build. The DVD has hi res versions of each video. Here are the low res versions he's posted on Youtube:



  Barrel Removal


Bulgarian Rivets


Checking Headspace


Demilling Trigger Guard


Drilling Front Trunnion Holes


Drilling Out Old Rivets


Drilling Rear Trunnion Holes


Drilling Scope Rail


Fitting and Riveting Mag & Trigger Guard


Pressing Front Trunnion Rivets


Pressing in the Barrel


Pressing Rear Trunnion Rivets


Pressing Front Trunnion Rivets


Pressing Out The Barrel


Reinstalling The Barrel Pin


Removing Reciever Stubs


Riveting The Scope Rail


How to Bend a Receiver

Review of NDS-2 Receiver

Saturday, September 11, 1999

Dimensions & Plans

Bolt Rail Dimensions

Scope Rail Location

Using your drill press as a lathe for barrel work

Barrel Thread Sizes

Fire Control Group Retaining Wire Placement

Polish Underfolder Parts Diagram

Barrel Dimensions

Chamber .764" (19.25mm w/ .005 - .006" press fit)
Rear Sight Base .734" (18.5mm w/ .005 - .006" press fit)
Handguard Retainer .691"
Gas Block .634" (16mm w/ .003 - .004" press fit)
Front Sight Base .594" (15mm w/ .003 - .004" press fit)

Chamber .908" (23mm w/ .003 - .004" press fit)
Rear Sight Base .694" (17.5mm w/ .003 - .004" press fit)
Handguard Retainer .671"
Gas Block .594" (15mm w/ .003 - .004" press fit)
Front Sight Base .575" (14.5mm w/ .003 - .004" press fit)

Chamber .871" (22mm w/ .004 - .005" press fit)
Rear Sight Base .694" (17.5mm w/ .003 - .004" press fit)
Handguard Retainer .671"
Gas Block .594" (15mm w/ .003 - .004" press fit)
Front Sight Base .575" (14.5mm w/ .003 - .004" press fit)

Chamber .867" (22mm w/ .001 - .002" press fit)
Rear Sight Base .694" (17.5mm w/ .003 - .004" press fit)
Handguard Retainer .671"
Gas Block .594" (15mm w/ .003 - .004" press fit)
Front Sight Base .575" (14.5mm w/ .003 - .004" press fit)

Chamber .908" (23mm w/ .003 - .004" press fit)
Rear Sight Base .694" (17.5mm w/ .003 - .004" press fit)
Handguard Retainer .671"
Gas Block .594" (15mm w/ .003 - .004" press fit)
Front Sight Base .517" (13mm w/ .004 - .005" press fit)

Chamber .908" (23mm w/ .003 - .004" press fit)
Rear Sight Base .694" (17.5mm w/ .003 - .004" press fit)
Handguard Retainer .671"
Combination Gas Block & Front Sight Base .575" (14.5mm w/ .003 - .004" press fit)

AKMS Underfolder Conversion

M70AB/2 Receiver template from Ding

AK-74 Side Folder Conversion Plans From Pookie

Weapons Manuals & Books


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