Early complaints about the M9 Beretta were focused on its 9x19mm round. It replaced the .45 caliber M11911, which was seen as having more stopping power than the 9mm Beretta. This had old-timers ...

The Beretta M9 Was Cheaper to Produce This move was controversial because the military went from the Colt’s .45 ACP round to the Beretta’s 9 X 19 mm caliber bullet.

The M1911 is the OG pistol that’s been used in combat from 1911 well into the 2020s. The Beretta M9 pistol was introduced to the ranks as a replacement for the M1911 starting in 1985.