CMC Triggers 81631 AR-15 Enhanced Bolt Carrier Group Black Nitride

$170.76

The CMC Triggers Enhanced Bolt Carrier Group, crafted from durable 8620 steel and finished in black nitride, elevates your AR-15's performance. Compatible with .223 Remington, 5.56x45mm NATO, and 300 Blackout calibers.

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CMC Triggers Enhanced Bolt Carrier Group

The heart of any firearm is its bolt carrier group, and CMC Triggers has developed an exceptional offering for those who demand superior performance. The Enhanced Bolt Carrier Group from CMC is crafted with precision and durability in mind, ensuring that your rifle operates at peak efficiency.

Carrier Assembly

At the core of this assembly lies a flared rear design on the enhanced bolt carrier. This feature reduces tilt and cant during recoil by strategically repositioning key bearing surfaces, thereby increasing reliability. Constructed from case-hardened 8620 steel, it boasts fewer points of contact to reduce friction area significantly. An increase in mass ensures proper gas pressure management, which enhances dwell time—critical for improving extraction when shooting suppressed or utilizing short-barreled rifles (SBRs).

Bolt Assembly

The bolt itself adheres strictly to true Mil-spec dimensions, promising compatibility and dependable performance across various platforms (.223/5.56/300BLK). After heat treatment, external surfaces are CNC ground to achieve a precision fit held to the highest tolerances possible.

A noteworthy feature is the "trumpet" area behind the gas rings where carbon tends to accumulate; here too, precision CNC grinding post-heat treatment ensures smoothness for easier cleanup and extended longevity. Made from 9310 case-hardened steel with components that have been shot peened and finished with Black Nitride coating for added resilience.

Finish: Black Nitride
Ports: Enlarged forward ports optimized specifically for suppressor use
Pins: Hardened 4340 cam pin & Mil-Spec 8740 steel firing pin provide robust reliability
Tolerances: MPI (Magnetic Particle Inspected) & HPT (High Pressure Tested)
Springs & O-Rings: Equipped with Mil-Spec extractor spring & O-ring for consistent operation under various conditions

This component set represents an ideal enhancement or replacement part designed not just to meet but exceed expectations through rigorous engineering excellence—a testament suitable only for shooters serious about their craft.