MSR Full Auto Bolt Carrier Group | Selectable


Proven through 30,000 rounds of Government protocol endurance testing and guaranteed for life against chipping, spalling or flaking, these BCGs are NiB-X® coated in your choice 11 colors, delivering 40% more wear-resistant protection than chrome.

Product Description

These colors don’t run, but with the quick and easy-to-clean NiB-X® nickel boron coating, powder residue and fouling sure do. Every component of this Full Auto Bolt Carrier Group is deemed operator-grade by industry heavy-weight WMD, and coated with NiB-X® technology that provides a permanently lubricious surface for minimal lube requirements, while reducing cleaning efforts to the simple wipe of a cloth.

Note: Not available for international sales.


  • All components heat-treated, hardened, and specifically engineered for nickel boron coating to provide long life, high reliability and easy cleaning and maintenance
  • Heavier M16 style carrier functions in AR15 and M4/M16 platforms
  • Delivers a finish superior to even the exterior finishes of other firearms
  • Bolt – Carpenter 158 heat-treated, mag particle inspected, engineered from government spec for NiB-X® with Milspec gas rings; Gas Key – hardened to USGI specs and attached using grade 8 hardened fasteners and Permatex No. 3D Avia

Made To:

WMD Guns®
Allow Giftwrapper
Firearm Brand
Multiple Brands
Firearm Model
Modern Sporting Rifle
1 lb
Write Your Own Review
You're reviewing: MSR Full Auto Bolt Carrier Group | Selectable

Sign up for new ways to gear up.

Sign up to join the Go Gear Direct team and receive automatic updates on the latest industry news, product launches and new gear deals.