Transform your AR platform with a POF USA patented roller cam pin meticulously designed to reduce friction and drag. Unlike standard cam pins with a steel square head this innovative roller cam pin ensures smoother operation by minimizing contact with the aluminum receiver. Perfectly engineered as a replacement part for piston bolt carrier groups it fits the P308 7.62 model bolt assembly. Built with durable steel and a sleek silver finish this is a top-tier upgrade for firearm performance. Optimize the function of your AR in every shot with POF's high-precision and revolutionary design.