New Frontier Armory AR40 Bolt Carrier Glock 9mm 10mm Multi Caliber

The NEW FRONTIER BOLT CARRIER AR40 from New Frontier Armory is a precision milled, all-steel bolt carrier group designed to deliver reliable AR performance with versatility for multiple calibers and platforms, featuring US Made 8620 steel with a durable mag phosphate finish and a ramped carrier to work seamlessly with both 9mm and standard AR hammers. This complete bolt carrier group is precision milled for Glock style lower receivers, enabling smooth integration into compatible builds, while its M-16 cut accommodates transferable full auto MGs, dealer post sample MGs, or other legal machine guns, expanding its potential applications for enthusiasts and professionals alike. The AR40's robust construction also makes it suitable for use in large frame lowers to run 10mm, providing additional compatibility for diverse AR configurations. Highlighting its versatility, this steel bolt carrier group blends seamlessly into AR-15 accessories with a black matte finish and standardized dimensions (1.20 x 3.85 x 7.60), ensuring dependable fit and performance across compatible platforms. Perfect for builders seeking a reliable, multi-caliber carrier that supports Glock-style integration and enhanced capability in a single, value-driven package.