/vr/ - Retro Games

>>2541689
I guess I could look at each element, the handguards/foreend look vaguely inspired by the M4, as does the front sight post (which is really tall and there doesn't seem to be any rear sight to go with it).
The receiver itself looks like a generic box at most, maybe like the body of a Browning 1919 or something if you squint.
Magazine looks generic, but could pass for an MP40 or Sten magazine. Pistol grip is generic as well.

>>2541925
Could be that it's some sort of ridged/corrugated outer cover over the four barrels? Not quite related but the first thing I thought about with 4 barrels was that old Civil War/WW1 era Hotchkiss light artillery with a hand-crank (commonly used on ships as a defensive gun against sappers). Impressive piece for it's time, one man aims and fires, the other cranks and keeps it loaded, could fire off quite a few shells a minute.