This Cam Pin for AR-15 is a direct-fit M4-style cam pin from Sons of Liberty Gun Works (brand part no. CAMPINM4), built for standard AR-15 bolt carrier groups. The cam pin rides through the bolt and rotates it to lock and unlock from the barrel extension as the carrier group cycles, making it a wear part worth replacing if it becomes worn, bent, or cracked. This is a straightforward drop-in replacement for a standard bolt carrier group.

Key Specifications

• Functions as the cam pin that rotates the bolt to lock and unlock from the barrel extension.
• Built to M4-style dimensions for standard AR-15 bolt carrier groups.

Frequently Asked Questions

What does the cam pin do? It rides through the bolt and rotates it to lock and unlock from the barrel extension as the action cycles.

Will this fit a standard AR-15 bolt carrier group? Yes, it’s built to M4-style dimensions for standard AR-15 bolt carrier groups.

Buy the Cam Pin for AR-15

Replace a worn or cracked cam pin with this Sons of Liberty Gun Works part built for standard AR-15 bolt carrier groups. It ships fast from our Lubbock, Texas gun shop, and our small AR-15 parts selection has more small AR-15 parts.