the M1 Carbine, and the M1 Garand as well as two machine guns – the M3 Submachine gun, commonly referred to as the “Grease Gun” or “Greaser,” and Thompson’s famed Submachine gun. As an aside, both machine guns used .45 ACP rounds. ...
And what is the main difference between centerfire and rimfire ammunition anyway? Big spoiler…. powder, and power. (left to right) .22 LR, 9mm, .45 ACP, .38 SPL, .357 Mag, 7.62×39 Soviet, 5.56 NATO, 6.5 Creedmoor, and .308 Winchester Love Ammo? Get My Cartridge Comparison Handbook!