reloading submachine gun

19mm 9mm agencies aim air ammunition arms army assault automatic back barrel blow bolt bullet calibre carrier cartridge chamber closed cooled delayed diopter elevation enforcement federal finger fire firing flash floating forces free front grip guard gun hammer heckler impact index iron koch law lightweight machine magazine mp5 muzzle pin pistol police position protect range rear recoil reload rifling rounds safety security selective semi serve sights small special spring stock sub swat trigger velocity weapon zeroed