CMC Triggers Enhanced Bolt Carrier Group AR15 5.56 223 300BLK Mil Spec

The CMC Triggers Enhanced Bolt Carrier Group for AR-15 in 5.56/.223/300 Blackout is engineered for shooters who demand peak reliability and precision from the heart of their rifle, delivering a proven combination of durability and improved performance. Engineered carrier geometry features a flared rear to reduce carrier tilt and cant during recoil while relocating key bearing surfaces to increase reliability, constructed from case-hardened 8620 steel for lasting strength. The bolt assembly meets true Mil-Spec dimensions, with external surfaces CNC ground after heat treatment for a precise fit, and a hardened 4340 cam pin paired with a mil-spec firing pin, all shot peened and polished for longevity. The trumpet area behind the gas rings is CNC ground after heat treatment to promote smooth cleaning and reduce carbon buildup, enhancing longevity especially when shooting suppressed or in short-barreled configurations. Additional enhancements include a Black Nitride finish, enlarged forward ports, and an optimized design for suppressor use, plus a Mil-Spec Extractor Spring and O-Ring, all compatible with .223/5.56/300BLK platforms to deliver consistent extraction and reliable cycling under demanding field conditions.