Bolt Carrier Groups

WMD Guns NIB-X BCGs are renowned for their quality, reliability and ease of cleaning.  With NiB-X nickel boron at its core this BCG outperforms any on the market.  Engineered and manufactured specifically for NiB-X.  Tested worldwide in all harsh environments with no equal.  Now offered with colored topcoats over the NiB-X and an NiB-X Black.  Many calibers to choose from for the AR15, M4 and .308 platforms.