The M9 Beretta replaced the M1911 as the standard issue sidearm for the US Army in 1990. It is a semiautomatic pistol with a fifteen round magazine. The M9 Beretta's muzzle velocity is twelve hundred feet per second with an effective range of roughly one hundred and fifty feet.
The army uses a standard issue 9mm Beretta 92. However in some cases, special groups of the military such as the rangers and Navy seals can chose other side arms based on their special needs or personal preference.