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


Elevate your AR-15’s performance with the WMD Guns NiB-X AR-15 Semi-Automatic BCG. Crafted to military-grade specifications, this top-quality bolt carrier group features a durable NiB-X nickel boron coating for enhanced longevity and effortless cleaning. With meticulously coated and polished components, including Carpenter 158 bolt and 8620 steel carrier, this BCG ensures reliable performance and easy maintenance. Made in the USA, it’s a must-have upgrade for any AR-15 enthusiast.


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


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.