Scripted Colt M16A1 Assault Rifle Carbine M4A1 M16 MK18 SBR Transfer

Scripted Colt M16A1 Assault Rifle Carbine M4A1 M16 MK18 SBR Giftable / Transfer

The M16 rifle, officially designated Rifle, Caliber 5.56 mm, M16, is a family of military rifles adapted from the ArmaLite AR-15 rifle for the United States military. The original M16 rifle was a 5.56mm automatic rifle with a 20-round magazine.

In 1964, the M16 entered US military service and the following year was deployed for jungle warfare operations during the Vietnam War.