556M16M50B8R

Diamondback Firearms Barrel223 Remington/556NATO16″1:8 TwistBlack Nitride FinishMid Length Gas SystemThreaded 1/2-28″Fits AR RiflesFeatures:Caliber: 223 Remington/556 NATOGas System: Mid-LengthLength: 16″Contour/Profile: MediumTwist: 1:7Material: 4150 Chrome MolyCoating: Black NitrideThread: 1/2 x 28Rifling: Button…