10.5" CQB 5.56mm Stainless Barrel --1 in 7" twist polygonal rifling --Extended Feed Ramps --Beadblasted finish on barrel --Carbine length gas system --1/2x28 threads --Low-profile gas block pinned to barrel --Forged Vltor MUR upper receiver featuring an anti-rotation interface with the handguard --9" free floated handguard w/ 1913 rails --Shot peened and MP tested bolt --Auto carrier with properly staked carrier key --Gun Fighter Charging Handle --KX3 flash suppressor,(US pat #7,836,809) Upper Weight: 4 1/2 lbs
