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I have a milled Russian underfolder kit and want to build my own personal rifle out of it, my questions are what size trunnions (front and rear) do I use snce its a milled receiver or can I buy a milled receiver anywhere ? Pros and cons doing
a stamped versus milled receiver would be appriciated as well, and links to suppliers. Obviously this is my first build , do to some probably simple questions I'm asking but, I'd like to know the best plan of attack .
another question or two first how do I remove the barrel assy from the milled receiver ? The other is how do you disassemble the folding stock ?
Any help is appriciated :thankyou:
 

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Leatherneck,

There are alot more qualified guys here to answer your questions, but I will give it a shot. I also have one of the the Russian Milled Underfolder kits. The first thing is be prepared to spend approx. $480 for a receiver from Firing Line (their website is: http://www.angelfire.com/ok3/firingline/ ). The barrel in your kit should be screwed into the receiver stub, so it can be removed with proper tools. The Underfolder must be disassembled from the rear of the receiver and reinstalled on the new milled receiver. I have not looked at how to disassemble the underfolder yet, but it should not be too bad of a job; the section of receiver will be junk, so you can't hurt that part when disassembling.

I am guessing that when I get this project completed, I will have about $700 invested with me doing the work except headspacing and parkerizing.
 

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Abwehr said:
Leatherneck,

There are alot more qualified guys here to answer your questions, but I will give it a shot. I also have one of the the Russian Milled Underfolder kits. The first thing is be prepared to spend approx. $480 for a receiver from Firing Line (their website is: http://www.angelfire.com/ok3/firingline/ ). The barrel in your kit should be screwed into the receiver stub, so it can be removed with proper tools. The Underfolder must be disassembled from the rear of the receiver and reinstalled on the new milled receiver. I have not looked at how to disassemble the underfolder yet, but it should not be too bad of a job; the section of receiver will be junk, so you can't hurt that part when disassembling.

I am guessing that when I get this project completed, I will have about $700 invested with me doing the work except headspacing and parkerizing.

I agree with what was said above. You can make an AK from a milled kit but it takes a great deal of machining which you can do at home, but it is a lot of work. I have a FIRING LINE receiver on one of my Polish underfolders. It is my favorite AK. The receiver is worth every freaken penny!!! The customere service is good and the guys to deal with are really the best (Dave and Mike).
Believe me, you will not regret it. Just my two cents. Jack
 

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The barrel on the milled Russians (from Sportsmans Guide?) is threaded to screw into a threaded milled reciever. That complicates building with one of these kits a great deal. The viable options for building are:

1. Buy a threaded underfold milled reciever from Firingline. I have three FiringLine receivers and they are awesome, but mine are all press and pin builds. If I was having a kit built on a threaded FiringLine receiver I would let Mike at FiringLine install the barrel and headspace it. I don't think the barrel install on a threaded reciever is straight forward enough to do at home. The receiver and labor will cost big $. This would make a cadillac of a rifle with a price to match.

2. Pull the barrel and have the threads turned off and the diameter reduced to 23mm. The barrel can then be pressed in a standard trunion or a press-n-pin milled receiver, just like any other press-n-pin barrel. This is the best option for a high quality build, but will still cost some $. This is how Global Trades makes the awesome SSR-85C rifles out of milled kits - first Polish and now Bulgarian threaded milled kit Barrels are used. You could use a Global underfolder cut receiver that are supposed to be available any day now.

3. Grind and file the receiver stub on the barrel into a makeshift trunion and install it into a stamped receiver with screws or weld. AKgreyman -aka Ohm's research- sells a video - dvd that shows the work in detail. Cheap and can be done at home. A bit funky looking but can be plenty strong and reliable if done right. Akgreyman also documents building a brick shithouse of a homemade receiver. The technique is pretty dated now, but it works. The first AK I built was a milled hungarian kit on a Ohm's research type receiver. It still runs great after a couple thousand rounds, but you need to be pretty buff to pack it around.

4. If you are a capable welder with a good tig machine and time to burn, it is possible to reconstruct the "milled" receiver by replacing the missing chunks of metal by fabricating them to fit like missing puzzle pieces and welding them in. The kits I have seen from Sportsman's Guide have just barely enough metal on the fron and rear stubs to make this do-able. If you have the equipment, skill & time, it can be a fun project and cheap entertainment. It is beyond the abilities of just about all amateurs though.

s & p
 
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