WMD Guns AR-15 Bolt Carrier Group Nickel Boron 7.62X39 No Hammer

Bolt Carrier Group Features BCG components are coated and polished to reduce fouling adherence. Coating is guaranteed for life against chipping spalling or flaking. Over 30K rounds in Government protocol endurance testing did not wear the coating off. Especially beneficial in short barrel setups and suppressed platforms. Bolt Carrier Group Specifications 7.62x39 NiB-X coating Bolt - Case hardened 9310 shot peened magnetic particle inspected Extractor - Manufactured heat-treated and hardened Firing Pin - Manufactured heat-treated hardened chromed and certified per Government drawings Gas Key - Hardened to USGI specifications and attached using grade 8 hardened fasteners Cam Pin - Manufactured heat treated hardened and certified per government drawing Carrier - M4/16 style full auto (heavier) functions in AR15 and M4/16 platforms 8620 material heat treated and case hardened