Bolt Carrier Group: Full-auto profile bolt carrier group. Shot-peened, mil-spec Carpenter 158 steel bolt. Gas Key Hardened to USGI Specifications, fastened with Grade 8 screws, and Staked Per Mil-Spec. Carrier is 8620 steel M-16 full-auto profile.
Lower: These forged lowers are quality made using 7075-T6 aluminum and are marked "MULTI" for the caliber. Finish is hard-coat anodized. The Mil-spec diameter 7075-T6 buffer tube is hard-coat anodized with 6 adjustment positions and is fitted with a MOE Carbine Stock, Magpul grip, and Enhanced Polished Trigger (EPT).