Key Points: The Beretta M9 served the U.S. military for decades but garnered mixed reviews. Critics decried its 9mm round’s limited stopping power compared to the .45 caliber M1911 it replaced ...

The M9 is a lightweight, semi-automatic pistol manufactured by Beretta and designed to replace the M1911A1 .45 caliber pistol and .38 caliber revolvers. The Beretta M9 has redundant automatic ...