Sionics Barrel 12.5″ The SIONICS Barrel is a Chrome Lined high-quality barrel that is made from 41V50 Chrome Moly Vanadium Steel. It has a medium contour, a carbine-length gas system, and a .750″ gas seat diameter. The barrel feature hand-polished feed ramps and has a 1/7 twist rate. It is also threaded 1/2×28 and is manganese phosphate coated. The barrel is magnetic particle inspected and radiograph inspected. It is pre-dimpled for easy installation of the gas block. This barrel is a great choice for a general purpose pistol or SBR. Features: 12.5” Chambered in 5.56 NATO 41V50 CMV Steel Manganese Phosphate Coated Chrome Lined Medium Profile .750″ gas seat diameter 1/7 Twist Rate Carbine Gas System Magnetic Particle Inspected Weight: 1 Lb. 6 oz. Radiograph Inspected Threaded 1/2×28 Hand Polished Feed Ramps Pre-Dimpled for easy Gas Block Installation Barrel Specifications Barrel Length 12.5 Inches Chambering 5.56 NATO Barrel Contour Medium Twist Rate 1/7 Twist Rate Thread Pitch 1/2 x 28 Gas System Mid Length Gas Seat Diameter .750 Barrel Material 41V50 Chrome-Moly Vanadium Steel Outer Coating Manganese Phosphate Coated Inner Coating Chrome Lined Weight 25.6 oz / 726 g
