WMD AR-15 NIB-X Semi Auto BCG Bolt Carrier Group with Hammer Polished


WMD NiB-X AR-15 Bolt Carrier Group with Hammer


WMD NiB-X AR-15 Semi Auto Bolt Carrier Group with Hammer Polished

If you’re looking for a top-quality bcg for your AR-15, look no further than the WMD Guns NiB-X AR-15 Semi-Automatic BCG. This BCG is manufactured by Military defense vendors to WMD’s tight tolerance specifications, ensuring that it’s one of the best BCGs on the market. It features a NiB-X nickel boron coating for long life and easy cleaning, and all of its components are NiBx coated and polished. This BCG is sure to make a great addition to your AR-15 collection!

WMD AR-15 Bolt Carrier Group Specifications:


  • Carpenter 158
  • magnetic particle Inspected
  • Mil-Spec Gas Rings
  • NiB-X Coated for better wear Protection


  • heat-treated and hardened per Mil-Spec
  • NiB-X coated

Firing Pin –

  • Manufactured per Mil-Spec
  • heat-treated, hardened, chromed


  • AR-15 Semi-Automatic
  • 8620 Steel
  • heat treated and case hardened
  • NiB-X coated for durability and ease of cleaning.

Gas Key

  • Hardened to Mil-Specs
  • grade 8 hardened fasteners
  •  NiB-X coated
  • Staked per military specifications.

Cam Pin

  • heat treated, hardened per Mil-spec
  • NiB-X Coated


Additional information

Weight 1.5 lbs




BCG Coating


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