For much of the mid-twentieth century, handgun development was in a period of stagnation. The development of the semiautomatic pistol had ushered in a new weapon that, although more complex than a revolver, had a higher ammunition capacity. Quickly adopted by armies around the world, the steel-framed semiautomatic reigned for decades. Then, in the 1980s, something came along that disrupted the firearms industry: the Glock handgun. Today it’s carried by armies worldwide, from the U.S. Army Rangers to the British Armed Forces.