It is well known that the US military opted to use the .45 caliber for its standard sidearm ever since adopting the Colt 1911. It might not be as well known that Luger actually presented his new 9mm Parabellum round to both the British and the US in 1902 and 1903, respectively. The US...
For example, the Glock 43 is taller, because it has to fit that sixth round in there somehow. The Glock 26 is wider, because it has a double stack magazine. As such, the Glock 26 has a much higher magazine capacity. The only other really noticeable difference is the magazine capacity, ...