9mm AK my way
Started on this project back in December and it is just now nearing completion. I am a slow worker, what can I say...
Started with an AK flat and 2xtm magwell.
FUBAR'd the angle of the magwell so I had to start over, good thing I have more flats and ordered 2 magwells. I am using a 16" uzi barrel that was turned and sleeved for me by a member of another site. Add a romi parts kit, phantom flash hider and saiga rifle handguard and this is what you get.
I was originally planning on using a 6 pos. adjustable AR stock but wasnt really diggin the look, so I changed my mind and went with a plain ol' A2 stock instead. I made a sort of "pistol" trunnion for the rear and was trying to figure out where I could find a steel AR recoil buffer tube when it hit me, its just a tub with a threaded hole at the end and I dont need the threads on the open end anyway so I went on the hunt for a piece of ~1.1" OD tube. I found it in an old Roadmaster bicycle frame I fished out of a trash pile awhile back.
Eyeballed 'er straight and welded 'er up.
Then after fiddling around with a CETME parts kit I decided a non-recip cocking handle would be the cats ass since this is a recoil-operated build. Step 1: Aquire G3 cocking tube and trunnion from RobertRTG (good people there BTW!)
Step2: Cut up G3 tube to remove area needed.
Step 3: Section G3 tube and weld AK RSB flange to end to achieve same OAL as AK gas tube.
I should note here that I originally was going to permanently weld the small piece of rail to the gas block to retain the option of running AR BUIS's but decided it looked retarded so I removed it and will be installing H&K open sights in addition to the rail on the RSB.
Next, mock up to test fit and function.
Luckily the G3 parts fit EXTREMELY well with the AK parts. The AK gas piston head fits PERFECTLY into the rear of the charging handle piece and once the outside of the piston and inside of the handle piece were beveled they work very well together. I am a little hessitant to drill and pin the gasblock because of the increase in bore diameter, I'm not sure how far I can go before getting into the bore. For this reason, I installed a set screw for now and it seems to be holding. If it retains its position after test firing, I will probably leave it there and maybe JB weld it in place. The angle of the gas block greatly affects the smoothness of the action but with it tweeked just right it works prety well. A little rough, but I expect it to smooth out with use.
On to the trigger assembly. It seems like the chamber on the uzi barrel is cut a little too shallow for the AK bolt face. The gap pictured below is with the round jammed as far in as it will go.
So I ordered a reamer from Brownells and plan on reaming it out just a little tiny bit more by hand, does anyone see a problem with this idea?
Somewhere along the way I decided I wanted a forward sweeping thumb safety on this mofo, so I made one. Here is the basic idea.
I cut up the rate reducer from my parts kit to make the safety lever:lildevil:
Then I moved on to the detent for the safety. I figured an AR detent and sprng would be cheap and easy, and it was.
How it all goes together
Cut out in rear trunnion
Still waiting on the reamer, hoping to get it done and test fire this weekend.
That is one nice build, i really like the HK cocking tube design on it.
I was wondering where you found the steel Picatinni Rail.
I have been looking for awhile and have not found any.
LOL I just noticed your safe-fire designations Kittens-Violence
HAHAHAHA love it
brownells has steel rail it is pricey however. I make my own on a mill but it is time consuming.
I got the rail from a member of another site that was doing a batch.
I LIKE IT! Lots of great ideas - Saiga HG, your thumb safe (got a good laugh out of Kittens / Violence) and HK tube. A2 stock with shortened rcvr has a nice compact look. Good thinking, nice design. Best of luck on the test-fire - keep us posted
Steve in El Paso
Great out of the box thinking and design.......I like it.
I was wondering where you got the soumi mag wells from? How do you fix the excessive back travel with the shorter cartridge?
The magwell was from Lichtenburg Research, but as far as I know they are out of them right now. What do mean by excessive back travel?
I attempted to test fire this weekend and it no worky. It appears that the bolt face does not properly line up with the chamber so the bolt cannot seat on a loaded cartridge. I'm gonna try hacking up the bolt carrier to make the bolt line up properly and go from there. I warped the receiver prety badly when finish welding the magwell in, I was careless and went to fast I suppose. I fixed that issue by moving the front trunnion and barrel assembly around enough so that the bolt carrier would still move freely. I suspect this is where the chamber fell out of alignment. This is my first kustom kaliber konversion so I'm still learning.