30 Carbine Ammo for Sale - M1 Carbine Ammunition The 30 Carbine cartridge was developed for the M1 carbine: a rifle that weighs half as much as an M1 Garand, and which was issued to support troops who didn’t feel like lugging 9 5 pound rifles everywhere they went With very few exceptions, commercial 30 Carbine ammo adheres to the same standards that were laid out in the early 1940s: 110 grain full metal jacket that achieves 1,990 fps