Differences between vertical mag vs horizontal mag?
Ive always been curious if there was ever any sort of performance differences/benefits between SMGs that use a vertical magazine like the Sten or the Czech ZK-383 vs the SMGs that use vertical mags like the Thompson or the PPSH. Does having the mag feed from the side feed better than having it feed upward? Was it a case of the militaries that used them wanting a gun that could be shot from a laying/prone position like how the US military preferred the internal mag of the M1 Garand because it didnt have a box sticking out? And you really dont see guns nowadays using a side-mag, so im curious if there was inherent issues that caused them to come out of modern adoption.