M14 Forum

jkh62

Stemple 9MM conversion mag dumps.....

http://fwd4.me/069r


Title says it all. I can wrap up my 9MM conversion started in this thread:

http://fwd4.me/04uS

I now have to re-finish the gun and mags. I also made 3 new barrels (one .45 regular length and two shorter suppressor barrels for my silencer. I was firing some old Egyptian 9mm ammo. Its suppose to be for SMG's becasue it has hard primers and is corrosive. I think we burned up around 600 rounds total and had 2 misfires so not too awful bad. It runs the same as modern ball ammo IMHO.

jim-analog

Greetings,

Hi Jhk62! Wow, what a fantastic job you did. I read the thread at UZI talk and followed your progress. What did you exactly start with? It looks like you manufactured just about everything yourself.

BTW, careful with the old Egyptian 9mm machine gun ammo...................I blew out an UZI barrel years ago after a squib load. It was cheap, but I never trusted it after that. Keep up the good work!

Regards, Jim

Bamban

OK, let me show my ignorance on sub guns. What is a Stemple?

jkh62

I started with a stock Stemple 76/45. Here is a picture (not mine) but mine was similar-






The Stemple was made / marketed between two people. Jim Burgess and John Stemple. When the 1986 machine gun ban hit I think Stemple registered a LOT of tubes. These were simply registered with the BATFE to build guns on. The guns were made between these two guys. Something happened along the way and Stemple was trying to get some tubes back from Burgress (legal separation / problems). I am not sure who got what after that but there are a variety of 76/45 guns floating around.

The gun is VERY basic and some do not work out of the box. Its a full auto only (no selector) open bolt gun. The bolt is a soft piece of steel. It deforms easily and will not last long if used. The gun (some) used a slightly modifind grease gun magazine. Others or later guns used UN-modified GG mags. The "mod" was a straight cut on the rear of the magazine for the magazine catch. The mag release was a simple hex head bolt (cheesy). The factory stock was pretty bad and did not lock up at all. The ejector was a bent piece of metal attached by a tapped hole in the mag well (crude). The barrel would get peened from the bolt hitting it and could rotate (no indexing or retainer).

Mine ran OK out of the box but I had plans..... I wanted the registered tube to build something better on. It took me a while but I made a list of things that needed fixed and things I wanted. What you see is wrapping that list.

I will play with a .22 conversion I want to try but right now I have a select fire sub machine gun in 9mm + .45 that I can run with normal barrels or suppressed with my extra barrels.

I had an original Powder Springs MAC-10 and a select fire model B UZI that I let go a while back. I always liked the S&W 76 design (that the Stemple 76/45 was patterned after). I never found a S&W 76 reasonably priced but the Stemple was available for a lot less and better suited my plans.

I also had a bulged barrel with my UZI firing some old MP40 ammo. Mine was never 100% reliable and I never had a working 32 round magazine. The 25's worked OK but my gun liked hot ball ammo.

davecampperry

Sounds like you re-engineerd the entire gun. Please shoot it on my birthday and remember us po'boys. lol.,

Seventh Fleet

I too have a select fire Powder Springs MAC-10 and I was fortunate to be given a bunch of .45acp grease gun magazines. I had a machine shop make me a new mag release so that unmodified grease gun magazines would work perfectly in my MAC.

Back in the 80s I was a member of the county SWAT team and we got hold of a bunch of that Egyptian 9mm sub machine gun ammo that we used for training. I was the team firearms instructor and we had lots of misfires in our Styer GB 9mm pistols and you're right that ammo had very hard primers and it was corrosive. In our experience the GB was a POS pistol and we had lots of issues with ours. I never carried one of them on a call out. We were trained that the entry team got the Cadillac, when it came to gear and I always carried my Colt 1911. The team leader couldn't refute my logic and soon the rest of the entry team was carrying what they wanted to in the way of a handgun due to our problems with that POS GB. We had the entire Styer weapons system which included the Steyr Aug P, MPI sub machine gun, SSG sniper rifles and of course the GB pistol.



7th

jkh62

I still like the AUG bullpup design and your right about the POS / GB pistol!