CMC AR15 Bolt Carrier Group – 5.56

Designed for shooters who demand the highest level of performance and reliability, the CMC Triggers Enhanced Bolt Carrier Group (BCG) offers industry-leading quality and precision. Engineered for durability and optimized for suppressor use, this BCG ensures smooth operation and superior performance in both standard and short-barreled rifles (SBRs).

Carrier Assembly:

• Flared Rear Design: The enhanced carrier features a flared rear to reduce tilt and cant during recoil, improving reliability by strategically relocating key bearing surfaces.
• High-Strength Material: Constructed from case-hardened 8620 steel for superior durability and performance.
• Reduced Friction: With fewer points of contact, the enhanced carrier minimizes friction, increasing gas pressure and dwell time for improved extraction, particularly when shooting suppressed or with SBRs.

Bolt Assembly:

• Mil-Spec Dimensions: The bolt is manufactured to true Mil-Spec dimensions and CNC ground after heat treatment for a precision fit and long-lasting performance.
• Optimized for Cleanliness and Longevity: The “trumpet” area behind the gas rings, where carbon buildup occurs, is CNC ground after heat treatment for a smoother surface, easing cleanup and extending bolt life.
• Durable Construction: Made from 9310 case-hardened steel, with bolt components that are shot peened and coated in Black Nitride for added strength and corrosion resistance.

Key Features:

• Black Nitride Finish: Provides superior corrosion resistance and smooth operation.
• Enlarged Forward Ports: Optimized for suppressor use, ensuring better gas management.
• Hardened 4340 Cam Pin: Increases durability in critical areas.
• Mil-Spec Components: Includes a Mil-Spec 8740 steel firing pin, extractor spring, and O-ring for reliable function.
• Compatibility: Compatible with .223, 5.56, and 300BLK.

Tested for Reliability:

• MPI and HPT Tested: The bolt is magnetic particle inspected (MPI) and high-pressure tested (HPT) to ensure the highest possible standards of safety and reliability.

The CMC Triggers Enhanced Bolt Carrier Group is built to perform under the toughest conditions, delivering unmatched reliability for serious shooters. Proudly made to the highest quality standards in the industry.