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.