DPMS Kitty Kat Complete Upper Features The DPMS Panther Arms Kitty Kat upper pairs a 7.5 inch 5.56 NATO barrel with a 1:7 twist rate an M4 barrel extension and a pistol length gas system giving builders a genuinely compact platform without sacrificing reliable function. Chrome Moly Vanadium steel construction and a black Nitride finish give the barrel resistance to heat and corrosion over repeated firing. A .750 inch diameter low profile gas block keeps the handguard s profile slim and an A2 flash hider finishes off the muzzle end. The DPMS Quad Rail free float handguard provides four sides of rail space for mounting lights lasers or other accessories as the build requires. The upper receiver itself is forged from 7075-T6 aluminum to an A3 configuration manufactured to mil-spec standards and hard coat anodized black for a durable long lasting finish. These uppers are made domestically by a mil-spec manufacturer reflecting DPMS s commitment to quality control. Inside the bolt is machined from mil-spec shot-peened Carpenter 158 steel with the gas key secured by grade 8 fasteners and staked to mil-spec. The bolt carrier is parkerized on the outside and chrome lined on the inside supporting smooth cycling and easy cleaning over the life of the upper. DPMS Kitty Kat Complete Upper Specifications Manufacturer: DPMS Panther Arms Model: Kitty Kat Complete Upper Caliber: 5.56 NATO Barrel Length: 7.50 Barrel Finish: Black Nitride Barrel Material: Chrome Moly Vanadium Twist Rate: 1:7 Thread Pattern: 1/2x28 Handguard: DPMS Quad Rail Receiver Material: Aluminum Available At: GrabAGun