FeaturesBarrel: 7.5" Chambered in 5.56 NATO, with a 1:7 twist rate, M4 barrel extension, and a pistol length gas system. This phosphate barrel is finished off with a DPMS Quad Rail free-float 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. Finish is hard coat anodize. Finished with an A2 pistol grip, DPMS adjustable CAR brace, and 6 position 7075 buffer tube. The fire control group is a mil-spec single-stage assembly.DetailsModel: Kitty KatBarrel Length: 7.5Caliber: 5.56 NATOBarrel Profile: HeavyBarrel Steel: Chrome Moly VanadiumBarrel Finish: PhosphateChrome Lining: NoMuzzle Thread Pattern: 1/2 x 28Twist Rate: 1:7Barrel Extension: M4Gas System Length: CarbineDiameter at Gas Block: .750Gas Block Type: Low-Profile Gas BlockMuzzle Device: A2 -styleReceiver Material: Forged 7075-T6Receiver Type: M4Handguard Type: DPMS 6.5 Quad RailBolt Material: Carpenter 158 SteelBolt Carrier Profile: Full AutoFire Control Group: Mil-Spec FCGGrip: DPMS A2 Grip, BlackBuffer Tube: 7075 T6 AluminumAdjustment: 6 PositionPistol Brace: DPMS Adjustable CAR BraceMagazine: 1 30 Round DPMS Aluminum Magazine