WMD Guns AR-15/M16/M4 Full Auto Bolt Carrier Group – NiB-X Nickel Boron PolishedUpgrade your AR-15, M16, or M4 with the WMD Guns NiB-X Full Auto Bolt Carrier Group (BCG). This premium polished nickel boron BCG delivers exceptional reliability, ultra-smooth operation, and dramatically easier cleaning thanks to WMD’s proprietary NiB-X® nickel boron coating.The NiB-X coating makes the BCG surface 40% harder than chrome, provides outstanding lubricity, and makes it virtually impervious to carbon fouling. Carbon wipes off with a cloth — no heavy solvents or scrubbing required. Perfect for high-round-count training, suppressed builds, SBRs, and harsh environments.
Key Features & Benefits:
- Proprietary NiB-X® Nickel Boron Coating — Super slick, self-lubricating, and highly corrosion resistant
- Full Auto Profile — Extra mass improves cycling reliability, reduces recoil, and supports semi-auto platforms
- Premium Construction — Built to military specifications with top-grade materials
- Easy Maintenance — Fouling-resistant and wipes clean effortlessly
- Proven Durability — Survived 30,000+ round government endurance testing without wear, chipping, or flaking
- Lifetime Coating Warranty — Backed by WMD Guns
Specifications:Calibers: .450 BMCarrier: 8620 steel, full-auto design, case-hardened, NiB-X coatedBolt: Case-hardened 9310 steel, shot peened, magnetic particle inspected, NiB-X coated extractor & ejectorGas Key: Hardened USGI spec, Grade 8 fasteners, properly stakedFiring Pin: Hardened, heat-treated, chromedCam Pin: Hardened and NiB-X coatedFinish: Polished NiB-X Nickel Boron (Glossy Silver)Origin: Made in the USA by WMD Guns
Ideal for competitive shooters, tactical builds, and anyone wanting a high-performance BCG that stays cleaner and runs smoother longer.Note: No special paperwork required for semi-automatic use.
By purchasing WMD AR Platform Bolt Carrier Group 450 Bushmaster NiB-X from our online store, you are guaranteed to receive a high-quality item. We work with trusted brands to offer shooting and hunting enthusiasts, both amateur and professional, quality products at a reasonable price. Choosing to buy from us means opting for quality and practicality
The actual appearance of the product may differ from the image on the website. For additional information about payment, delivery, and product specifications, please contact us by phone or email.
