Features – Barrel: Chrome-moly vanadium steel barrel chambered in 5.56 NATO with a 1:7 twist rate M4 barrel extension and a carbine-length gas system. M4 profile barrel is finished off with a 13.5 Lightweight M-Lok free-float handguard low-profile gas block and A2 flash hider. – Upper: Forged 7075-T6 A3 AR upper is machined to MIL-SPECS and hard coat anodized. Uppers include forward assist and dust cover. These uppers are made for us right here in the USA by a mil-spec manufacturer. – 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 and is chrome lined and phosphate coated. – 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 has 6 adjustment positions and is fitted with a M4 Carbine Stock for a traditional AR-15 look and feel. The rifle is finished off with an A2 grip and standard Mil-Spec AR-15 Fire Control Group. – Details – Barrel Length: 16 – Barrel Material: 4150V Chrome Moly Vanadium Steel – Barrel Finish: Phosphate – Barrel Profile: M4 – Chamber: 5.56 NATO – Twist Rate: 1 in 7 – Extension: M4 – Gas System: Carbine-Length – Gas Block Type: Low Profile .750 Diameter – Upper Receiver: Forged 7075 T6 Aluminum – Receiver Style: M4 Flat top with feed ramps – Receiver Finish: Hardcoat Anodized – Forward Assist: Yes – Dust Cover: Yes – Handguard Style: DPMS 13.5 Lightweight M-Lok Free Float Rail – Bolt Steel: Carpenter 158 Mag Phosphate coated – Bolt Carrier Steel: 8620 Chrome Lined – Staked Gas Key: Yes – Lower Receiver: Forged 7075 T6 Aluminum – Receiver Finish: Hardcoat Anodized – Fire Control Group: PSA AR-15 Mil-Spec Fire Control Group – Buffer Tube: 7075 T6 Aluminum Mil-Spec Tube – Adjustment: 6-position collapsible – Stock: PSA Classic Carbine Stock – Magazine: (1) 30-Round Magazine (where available by law) – Weight: 7 Lbs – Length: 32