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 ...

A soldier in Ukraine's Special Operations Forces told BI that the upgrade was an adjustment for some, but they got the hang of it.

Rangers are capable of conducting ... a 2.1 mile two-man buddy run in Army combat uniform, known as ACU, un-bloused combat boots, Camelback, carrying an M4, wearing a headlamp, and no headgear.

It works with the M4 Carbine, the M249 machine gun ... has increased penetration of armor and hard targets, but allows the Army to be more environmentally friendly on its ranges and training ...