The Five Best US Machine Guns Ever Produced: The United States military has produced some incredible machine guns throughout history, but worldwide, the machine gun has changed warfare forever.

Before the Browning M2, there was a series of Colt commercial .50 caliber machine guns. The .50 BMG (12.7x99mm) cartridge began development in 1918, and after the end of the war Colt and John Browning ...