This American Built Arms cam pin is a drop-in replacement for the cam pin in a 5.56mm AR-15 bolt carrier group. Its nickel-boron coating is slick enough that it needs very little lubrication in use, which helps it stay smooth when the rifle runs dirty. It installs straight into a standard bolt carrier.
- Fits: AR-15, 5.56mm bolt carrier groups
- Finish: nickel boron coated
- Needs very little lubrication
- Drop-in installation
