firearm a long barrel a stock a trigger a magazine a bipod or tripod for additional stability a muzzle a firing mechanism a flash suppressor
machinegun which has firearm machinegun which is a long barrel machinegun which is a stock machinegun which is a trigger machinegun which is a magazine machinegun which is a bipod or tripod for additional stability machinegun which is a muzzle machinegun which is a firing mechanism machinegun which is a flash suppressor