9х19 mm pistol-fired armor-piercing cartridge The 9х19mm pistol-fired armor-piercing cartridge 7N31 is designed to destroy enemy manpower, wearing body armor, in the open, behind light covers, and inside vehicles. It is fired by the 9mm GSh-18 pistol and 9mm PP-2000 submachine gun. The 9x19mm 7N31 armor-piercing cartridges boast considerably greater ...