The LBE Unlimited Cam Pin (LBE Unlimited part no. ARCPN) is a silver steel cam pin built for AR-15/M16 platform bolt carrier groups. LBE Unlimited machines it to mil-spec dimensions, so it drops into a standard bolt carrier group as a direct replacement for a worn, lost, or damaged original. The cam pin is what rotates the bolt during cycling, locking it into the barrel extension’s lugs on the forward stroke and unlocking it on the way back. It’s an inexpensive part to keep on hand, since a bolt carrier group won’t function correctly without one in good condition.

Key Specifications

• Machined from silver steel.
• Sized for AR-15/M16 platform bolt carrier groups.
• Functions as the cam pin, rotating the bolt to lock and unlock it from the barrel extension during cycling.

Frequently Asked Questions

Will this fit my AR-15 bolt carrier group? Yes, it’s sized for standard AR-15/M16 platform bolt carrier groups.

What does a cam pin actually do? It rotates the bolt during the firing cycle, locking it into the barrel extension’s lugs and unlocking it as the carrier moves rearward.

Buy the LBE Unlimited AR-15/M16 Cam Pin

A worn or missing cam pin will keep a bolt carrier group from locking up correctly, and this LBE Unlimited pin is a cheap way to keep a spare in your parts box. Order from our Lubbock, Texas gun shop and it ships fast to your door, along with more AR bolt carrier group parts.