WMD Guns AR-15/M16/M4 Bolt Carrier Group BCG 5.56 NiB-X Corvette Yellow

WMD Guns AR-15/M16/M4 Bolt Carrier Group BCG 5.56 NiB-X Corvette Yellow. Specifically engineered for NiB-X nickel boron coating to provide long life high reliability and easy cleaning and maintenance. Coating is guaranteed for life against chipping spalling or flaking. Over 30K rounds in Government protocol endurance testing did not wear the coating off. The Matte version of our BCG is our same NiB-X coating in a bead blasted look. Specifications for WMD Guns M16/AR-15 Full Auto Bolt Carrier Gro