Near the end of the First World War, the German army introduced powerful new anti-tank rifles, and the U.S. military realized that it needed a similar weapon. Legendary American firearm designer John Browning answered the call by developing a heavy-duty machine gun and a new type of .50 caliber ammunition for it. Although rapid improvement in armor plating soon made it obsolete as an anti-tank weapon, Browning\u27s machine gun proved to be enormously successful when deployed against personnel and less heavily armored vehicles. Military forces throughout the world continue to use it today. The ammunition for this gun became known as .50 Browning Machine Gun or .50 BMG. In the early 1980s, a handful of gun enthusiasts, tinkering in their gara...