WMD NIB-X BCG WITH HAMMER 556

WMD NiB-X BCG with Hammer – 5.56

The WMD NiB-X Bolt Carrier Group with Hammer is a premium, full-featured BCG designed for AR-15 rifles chambered in 5.56 NATO and .223 Remington. Featuring WMD’s exclusive NiB-X (Nickel Boron) coating, this bolt carrier group delivers smoother operation, easier cleaning, and extreme durability for demanding shooting conditions.

Complete Drop-In BCG with Hammer Included

This complete BCG comes pre-assembled with a coated hammer, making it ideal for builders and shooters looking to upgrade their fire control system as well as the bolt carrier group. The matched components work together for optimal function, reduced friction, and extended wear resistance—even in full-auto or suppressed setups.

Key Features

• Caliber Compatibility: Works with 5.56 NATO, .223 Remington, and .300 Blackout AR-15 platforms
• NiB-X Coating: Exclusive Nickel Boron coating provides outstanding wear resistance, corrosion protection, and slick, smooth cycling
• Full-Auto Rated Carrier: M16-style carrier for enhanced strength and compatibility
• 9310 Steel Bolt: Heat-treated, shot-peened, and magnetic particle inspected for durability
• Properly Staked Gas Key: Ensures secure and leak-free operation
• Includes Matching Coated Hammer: Optimized for smooth trigger pull and improved longevity
• Complete Assembly: Includes carrier, bolt, cam pin, firing pin, retaining pin, and coated hammer

Why NiB-X is a Superior Coating

WMD’s NiB-X coating is a proprietary Nickel Boron finish that outperforms traditional coatings in every category—resisting fouling, requiring less lubrication, and offering superior hardness and lubricity. This results in a BCG that runs cleaner, cooler, and longer, even under high round counts and harsh conditions.

Built for Duty, Competition, or Defense

Whether you're a law enforcement professional, 3-gun competitor, or dedicated range shooter, the WMD NiB-X BCG with Hammer is engineered to handle thousands of rounds with minimal maintenance. Its self-lubricating properties and heat-resistant design give you consistent performance when it matters most.

Upgrade to WMD NiB-X for Smoother, Cleaner Operation

The WMD NiB-X BCG with Hammer is the perfect upgrade for shooters who want maximum performance, minimal friction, and unmatched reliability in their AR-15. Whether you're building a custom rifle or replacing a worn-out BCG, this complete kit gives you battle-proven strength and cutting-edge coating technology. Order now and experience the WMD difference.