Lots of mass in the bolt made the M3A1 shoot slowly enough to be eminently manageable. Grease gun is far and away one of my favorites. Another approach was to use a rate reduction mechanism the clever Czechs put on the vz-61 Skorpion. Got to teach it in a OPFOR weapons familiarization class. Often fantasized about ways to divert government property every range day.
Lots of mass in the bolt made the M3A1 shoot slowly enough to be eminently manageable
I had one years ago and enjoyed it immensely. I had ten mags and could go through them all in about 15 minutes...when I got it there were no bolt springs so I have to try making some. I found the inner recoil springs from the FN butt fit so I cut them just long enough and used them. Let's just say they were a bit stouter than the originals and I had to use a screwdriver blade to cock the bolt. When I touched off, all ten empties were in the air at once. I went and had new springs wound, even though that was kind of neat.
A lot of people are surprised when I tell them it is easier to make a full auto firearm then a semi auto. The logic being simple, is it easier to peddle a bike by constantly moving or one peddle then having to disengage something to do a second peddle. Objects in motion tend to stay in motion and a full auto mechanism is less parts then a semi auto system. The more difficult part is when things like out of battery safeties and such get added in.
The most important part of an SMG is the magazine.
Agreed, if you're building, you seek mags you can get lots of and that work. If the SMG mag packs it in, you have to be a magician to sort them out sometimes.
Agreed, if you're building, you seek mags you can get lots of and that work. If the SMG mag packs it in, you have to be a magician to sort them out sometimes.
Good reason for Ingraham, among others, to have made good use of the tons of readily available surplus Sten, Uzi and grease gun mags in their postwar designs.
Good reason for Ingraham, among others, to have made good use of the tons of readily available surplus Sten, Uzi and grease gun mags in their postwar designs.
Sten mag was a copy of the Lanchester which was in production, which was a copy of the WWI Bergman MP18, more or less. The MP38/40 basically used the later improved Bergman MP28/updated magazine as it was in production. IIRC. Millions of magazines made and available. Etc.