WMD NIB-X Bolt Carrier Group with Hammer

Superior Coating Technology

The WMD NIB-X Bolt Carrier Group represents a significant advancement in AR-15 reliability and maintenance. Every component receives a proprietary NiB-X coating and precision polishing that dramatically reduces fouling adherence—keeping your rifle cleaner between maintenance cycles.

Proven Durability

WMD backs this coating with a lifetime guarantee against chipping, spalling, or flaking. The proof is in the testing: this BCG endured over 30,000 rounds in Government protocol endurance testing without coating degradation. That's real-world performance you can depend on.

Ideal for Modern Platforms

The NiB-X coating proves especially beneficial in demanding applications:

• Short barrel setups where higher pressures and temperatures accelerate wear
• Suppressed platforms where increased gas cycling and carbon buildup challenge standard coatings
• High-volume shooters who appreciate reduced cleaning frequency

Complete Package

This group includes the hammer, giving you everything needed for a complete bolt carrier assembly. The polished finish combined with the NiB-X coating creates a smooth-operating system that cycles reliably in any condition.