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CMC Triggers: Enhanced Bolt Carrier Group, AR15, 5.56
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$199.99
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SKU: 81631
Overview
Built for AR-pattern rifles, this enhanced bolt carrier group is aimed at shooters who want a more refined operating system component for suppressed setups and short-barreled rifles. Its carrier design uses a flared rear and reduced contact surfaces to help limit carrier tilt and friction, while the added mass is intended to support proper gas pressure and dwell time. The bolt assembly is CNC ground after heat treatment for a precision fit, and the unit includes a Black Nitride finish, enlarged forward ports, a hardened 4340 cam pin, a Mil-Spec 8740 steel firing pin, and a Mil-Spec extractor spring with O-ring. It is compatible with .223/5.56/300BLK platforms, making it a practical choice for hunters and serious shooters building around those chamberings.
Why Hunters Choose the Cmc Triggers
Enhanced Bolt
Carrier design reduces carrier tilt
Fewer Contact
Points help reduce friction area
Black Nitride
Finish is included on the
Optimized Suppressor
Enlarged forward ports and increased
Compatible .223,
.223, 5.56, and 300BLK platforms
Key Features
- Enhanced bolt carrier group for AR15 platforms chambered in 5.56.
- Black Nitride finish on bolt components.
- Enlarged forward ports and suppressor-optimized design.
- Carrier made from case-hardened 8620 steel.
- Bolt made from 9310 case-hardened steel, shot peened and Black Nitride coated.
- Includes hardened 4340 cam pin, Mil-Spec 8740 steel firing pin, and Mil-Spec extractor spring with O-ring.
Best Used For
- Suppressed AR-15 shooters needing an enhanced bolt carrier group for compatible 5.56 setups.
- Owners of short-barreled rifles looking for a carrier group designed to support dwell time.
- Hunters running .223, 5.56, or 300BLK rifles who want a mil-spec dimension bolt assembly.
- Shooters prioritizing a precision-fit bolt carrier group with Black Nitride finish and enlarged forward ports.
- Users replacing a standard AR-15 carrier group with a component built around reduced carrier tilt/cant.
Pros
- Enhanced bolt carrier design reduces carrier tilt during recoil by relocating key bearing surfaces.
- Fewer contact points help reduce friction area within the carrier assembly.
- Black Nitride finish is included on the bolt components and carrier group.
- Optimized for suppressor use, with enlarged forward ports and increased mass.
- Compatible with .223, 5.56, and 300BLK platforms.
- Bolt assembly is CNC ground after heat treatment for a precision fit.