American Built Arms Company AR-15 Cam Pin 5.56 NATO Nickel Boron

The American Built Arms Company AR-15 Cam Pin is a replacement cam pin designed for the AR-15/M16 bolt carrier group. The cam pin rides in the upper receiver's cam slot and locks the bolt into the bolt carrier, keeping the assembly properly oriented through the full cycle of the action.

Built for 5.56 NATO AR-platform rifles and carbines, this AB Arms cam pin features a Nickel Boron coated finish that delivers a hard, low-friction surface for smoother cycling, improved lubricity, and excellent corrosion resistance under harsh conditions. The drop-in AR-15/M16 fit makes it a straightforward upgrade or replacement part for any existing bolt carrier group.