WMD Guns NIB-X BCG – 450 Bushmaster

The WMD Guns NIB-X BCG is a bolt carrier group engineered specifically for 450 Bushmaster AR-15 platforms. This BCG features WMD's proprietary Nickel Boron coating, which reduces friction and wear while making carbon fouling significantly easier to clean. The 450 Bushmaster-specific design ensures proper headspacing and reliable cycling with this hard-hitting straight-wall cartridge.

The NIB-X coating is applied to all contact surfaces including the carrier, bolt, cam pin, and firing pin. This self-lubricating finish reduces the need for excessive oiling and provides excellent corrosion resistance. Installation is straightforward drop-in for any AR-15 upper chambered in 450 Bushmaster. No fitting or gunsmithing required.

• Part Type: Bolt Carrier Group
• Compatible Firearms: AR-15 (450 Bushmaster)
• Material: Steel with Nickel Boron coating
• Finish: NIB-X (Nickel Boron)
• Installation: Drop-In
• Includes: Bolt carrier, bolt assembly, cam pin, firing pin, firing pin retaining pin