Heavy Machine Gun - World War II and Later

World War II and Later

The heavier water-cooled designs continued to be used throughout WWII and into the 1960s, but were gradually phased out in favor of air-cooled designs. The mediums were now used both as medium machine guns while mounted on tripods and as light machine guns while mounted on bipods. This was possible in part because a heavy, static MG position was not a very effective tactic in vehicle-centered warfare, and the significantly lighter air-cooled designs could nearly match the capabilities of the water-cooled versions.

Gatling-type machine guns such as the Minigun and GShG-7.62 reappeared after WWII. These are typically mounted on ships and helicopters because of their weight and large ammunition requirements (due to their extremely high rate of fire.) The need for sustained automatic fire on the ground, however, is now nearly entirely filled by air-cooled medium machine guns.