CMMG Cam Pin AR15

The CMMG Cam Pin AR15 is a precision-engineered bolt carrier group component manufactured by CMMG Inc., a recognized leader in AR-platform reliability and performance. This cam pin serves as a critical rotating interface within the bolt carrier assembly, translating linear bolt carrier motion into the rotational unlock needed for reliable extraction and ejection across thousands of firing cycles.

Cam pin design directly affects carrier tilt angle, unlock timing, and bolt-to-receiver wear rates. The CMMG 55BA46C cam pin is engineered to maintain consistent geometry and surface finish under repeated cycling, ensuring predictable timing that prevents premature wear on the receiver extension lugs and bolt locking lugs. Proper cam pin fit within the bolt carrier is essential—undersized or worn pins create timing lag that compounds stress on both the bolt and carrier extension over extended use.

This replacement component is suited for AR15 platform maintenance, upgrading worn carriers, or building precision bolt carrier groups from individual components. Whether supporting duty-grade rifles, precision builds, or maintenance-focused operators, the CMMG cam pin delivers the dimensional accuracy required for reliable semi-automatic and select-fire function in both standard and high-volume training environments.

CMMG Inc. AR15 cam pins are compatible with standard mil-spec bolt carrier assemblies. Verify carrier and bolt compatibility before installation. Proper lubrication and inspection of mating surfaces ensure optimal performance and longevity across cycling regimens.