However, try as they might, the M16 always stuck around. During the Cold War, the world moved away from the heavy battle rifle calibers that were used in World War II to the assault rifle concept.

Aahh, the oh-so-controversial AR-15, the semiauto-only civilian market version of the U.S. Armed Forces’ M16 rifle. Everybody knows the “AR” stands for “Assault Rifle,” right?