Rosco Manufacturing M4 Barrel 556NATO 16" Mid Length Gas System Fits AR-15 Nitride Finish Black BL-16-GVT-556-7-M
Rosco Manufacturing, M4, Barrel, 556NATO, 16", Mid Length Gas System, Fits AR-15, Nitride Finish, Black NEW 16", Mid Length Gas System 1/2x28 Muzzle Threading 1/7 Twist 4150 CMV Construction Nit...