M60

The M60, officially the United States Machine Gun, Caliber 7.62 mm, M60, is a family of American general-purpose machine guns firing 7.62×51mm NATO cartridges from a disintegrating belt of M13 links. There are several types of ammunition approved for use in the M60, including ball, tracer, and armor-piercing rounds.

Introduced in 1957, it has served with every branch of the U.S. military and still served with the armed forces of other states at the time of the apocalypse. Its manufacture and continued upgrade for military and commercial purchase continued into the 21st century, although it was replaced or supplemented in most roles by other designs, most notably the M240 machine gun in U.S. service.