Barrel: Chambered in 300AAC Blackout with a 1:7 twist rate, M4 barrel extension, and a Nitride pistol length gas system this barrel features a nitride finish for durability. It is finished off with a DPMS 6.5" Quad Rail, .750" diameter low profile gas block, and an A2 flash hider.Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. These uppers are made for us right here in the USA by a mil-spec manufacturer.Bolt: Bolt is made of Mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is parkerized outside, and chrome lined inside.Lower: These forged lowers are quality made using 7075-T6 aluminum and are marked "MULTI" for caliber. This lower is completed with a A2 style grip, Standard Mil-Spec Trigger Group and fitted with a DPMS CAR style pistol brace.