Patriot Ordnance Factory AR-15 5.56 Roller Cam Pin

The Patriot Ordnance FactoryA(R) AR-15 5.56 Roller Cam Pin is just one more example of how far they will go to reduce friction and drag. Standard AR cam pins feature a square head that grinds along the inside of the aluminum receiver. Used as a replacement part for most piston AR bolt carrier groups (BCG). Made in USA.