The AB Arms 5.56mm AR-15 Cam Pin (brand part number ABACPNB) is a nickel boron coated upgrade for your bolt carrier group, built for AR-15 and M16 platforms. The nickel boron coating dramatically cuts friction, so the pin needs virtually no lubrication to run smoothly even after a long day at the range. It’s ready to drop directly into your existing bolt carrier group with no fitting required. Swapping a worn or pitted factory cam pin for this one is a cheap, easy way to smooth out your rifle’s cycling.

Key Specifications

• Sized for 5.56mm AR-15/M16 bolt carrier groups.
• Coated in nickel boron for a hard, low-friction surface.
• Needs virtually no lubrication during use.
• Drop-in ready, no fitting required.

Frequently Asked Questions

What platforms is this cam pin for? 5.56mm AR-15/M16 rifles.

Does it need lubrication? Virtually none, the nickel boron coating keeps friction low during use.

Buy the AB Arms 5.56mm AR-15 Cam Pin

American Built Arms Company built this cam pin for shooters who want a smoother-cycling rifle without babying it with lube between range trips. It’s a cheap, easy upgrade any time you’re already in your bolt carrier group. Shop more AB Arms parts or browse our full small AR-15 parts selection to complete your build. Order it from our Lubbock, Texas gun shop for fast, reliable shipping.