9mm Luger Bolt Carrier Group NiB-X Nickel Boron POLISHED
9mm Luger Bolt Carrier Group NiB-X Nickel Boron POLISHED, Pistol Caliber Bolt Carrier Group, 9mm, NiB-XA(R) - All WMD BCG components are manufactured by Defense Industrial Base suppliers to WMDs exacting specifications to provide the best BCG available. Specifically engineered for NiB-X nickel boron coating to provide long life, high reliability and easy cleaning and maintenance.