RIFLE: FRANKLIN ARMORY MODEL FAI-15 RIFLE, SERIAL NUMBER A-34228, BLACK (MATTE), NOT INCLUDED, SEMI - AUTOMATIC, 5.56 NATO, 16 Notes: Franklin Armory FAI-15 Semi-Automatic Rifle - 5.56 NATO The Franklin Armory FAI-15 is a semi-automatic rifle chambered in 5.56 NATO. This example features a black matte finish and a 16-inch barrel. The rifle is offered without a case. Manufacturer: Franklin Armory Model: FAI-15 Action: Semi-Automatic Caliber: 5.56 NATO Finish: Black Matte Barrel Length: 16" Case: Not Included Serial Number: A-34228 A Franklin Armory FAI-15 featuring a semi-automatic action, 5.56 NATO chambering, black matte finish, and 16-inch barrel.