The Beretta M9A3 was developed to meet the demanding requirements of the US armed forces and pick up where the M9A1 leaves off. It incorporates the established reliability and performance of the M9 with the addition of a 3 slot mil std 1913 rail, night sights, threaded barrel and increased ergonomic grip. The M90 series pistol is one of the most recognizable pistols across the world and that is no accident with its smooth operation and ability to perform in the harshest of environments.