The Boys from Brazil

The following weapons were used in The Boys from Brazil.

M16

When the Nazis destroy Dr. Joseph Mengele's (Gregory Peck) Paraguayan laboratory, Dietrich Hessen (Sky Dumont) and Arnold Schwimmer (Wolf Kahler) carry M16 assault rifles. The guns aren't used onscreen, but are presumably used to kill Mengele's Paraguayan servants and bodyguards offscreen, as we hear gunfire and see the people lying dead on the ground.

The original M16, the first version, firing in a 20-round magazine, adopted in large numbers by the U.S. Air Force in Vietnam. This has the original 3-prong flash hider. It would later be replaced by the upgraded M16A1 - 5.56x45mm