The M4-series Carbine achieves over 80% commonality with the M16A2 Rifle and replaces all M3 .45 caliber submachine guns, and selected M9 pistols and M16 rifles. The Army is pursuing a two-phase ...

The M3 had a standard thirty-round or thirty-two ... the first time I fired one—the semiauto-only M1927 carbine version—back ...