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WMD Guns AR15 Bolt Carrier Group - NiB-X (Black)

Bolt Carrier Group

Out of stock

AR15 Bolt Carrier Group - NiB-X (Black)


WMD brings the advanced performance of NiB-X® nickel boron and other performance coatings to one of the most critical components on your AR. WMDs premium BCG is coated in their proprietary NiB-X® nickel boron coating and polished to a presentation-grade sheen, this top-quality BCG resists fouling, needs practically no lubrication, and can be cleaned with a quick wipe of a cloth. They offer a variety of calibers and other performance finishes on BCGs.

WMD ran thousands of rounds between cleanings without malfunctions. Military personnel have praised its performance in desert conditions (where heavy lube buildup could attract deadly dust and grime). You’ll find that it provides extraordinary reliability…while dramatically reducing the cleaning time.



  • Bolt: Case hardened 9310, shot peened, magnetic particle inspected, with high-performance extractor, ejector springs, gas rings and special O-ring buffer.  NiB-X Black coated. 
  • Firing Pin: Manufactured, heat-treated, hardened, chromed and certified per government drawings. 
  • Carrier: AR-15 or M16 style (heavy weight), 8620 material, heat treated and case hardened. Manufacturing tolerances on inside diameters tightly controlled. NiB-X Black coated for durability and ease of cleaning. 
  • Gas Key: Hardened to USGI Specifications and attached using grade 8 hardened fasteners. NiB-X Black coated. Staked per military specifications. 
  • Cam Pin: Manufactured, heat treated, hardened and certified per Government drawings. NiB-X Black coated.
More Information
Product Type Bolt Carrier Group
Manufacturer WMD Guns
Color Black
Option AR-15

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