San Tan Tactical AR-15 6mm ARC Enhanced Bolt Carrier Group

Show your 6mm ARC rifle some love with the San Tan Tactical® AR-15 6mm ARC Enhanced Bolt Carrier Group. The bolt features Mil-Spec dimensions and its external surfaces are CNC Ground after heat treatment to ensure a precision fit. Plus, the area behind the gas rings is also precision CNC Ground after heat treatment to provide the smoothest area possible for easier cleanup and better longevity. The bolt features 9310 case hardened steel construction and bolt components are Shot Peened and Black Nitride coated for superior corrosion-resistant. The carrier assembly features a flared rear that helps reduce carrier tilt during recoil and has strategically relocated key bearing surfaces for increased reliability. What’s more, the carrier assembly boasts case hardened 8620 steel for superior strength and lasting dependability. Plus, this MPI and HPT tested bolt carrier group (BCG) has sand cuts that improve reliability, especially in heavily fouled guns, while the increase in mass helps to ensure proper gas pressure with increased dwell time that improves extraction especially when shooting suppressed or short-barreled rifles. Backed by a lifetime warranty from San Tan Tactical. Made in USA.