New Frontier Armory Bolt Carrier Group AR15 Matte Finish 8620 9310 4130 Gas Key

The New Frontier Armory NEW FRONTIER BOLT CARRIER AR15 delivers rugged reliability for AR-15 platforms with a precision-built steel composition and MILSPEC-grade assembly that ensures consistent cycling under demanding conditions. Crafted with a high-strength 8620 steel carrier and a 9310 steel bolt, complemented by a 4130 steel gas key that is properly staked, this bolt carrier group is designed to withstand the rigors of high-volume shooting and rigorous field use. The salt bath nitride finish