M16 rifle

American assault rifle

The M16 rifle (officially designated Rifle, Caliber 5.56mm, M16) is a family of assault rifles adapted from the ArmaLite AR-15 rifle for the United States military. The original M16 rifle was a 5.56×45mm automatic rifle with a 20-round magazine. In 1964, the XM16E1 entered US military service as the M16 and in the following year was deployed for jungle warfare operations during the Vietnam War.

From Wikipedia, under CC BY-SA. More on occurri.