The Italian Beretta 92FS is a 9mm handgun common with military and police forces all over the world. It is the standard sidearm of the U.S. military, though under the U.S. military it is commonly named Beretta M9 or simply M9. The Beretta 92FS is a double action pistol with a 15 round magazine and a mostly all steel construction.. In Gunslinger Girl, it is seen being used by both the Counter-terrorist forces and the Five Republics Faction.