M4 Carbine Gets A Makeover / Перетворення M4 до конфігурації M4A1

In footage taken at Ft. Riley, KS, Program Executive Office Soldier’s Product Manager Individual Weapons explains what it is doing to “up-gun“ its standard carbine. Changes include adding an automatic trigger and heavier barrel, and making the gun more ergonomic. Once an M4 undergoes these modifications, it becomes an M4A1. All M4s in the Army inventory are scheduled for upgrading.