10.5" Cold Hammer Forged 5.56mm Barrel 
--Made of Mil Spec M249 Machine Gun barrel steel, with heavy M249 Chrome Lining, (appx. 2 times as thick as an M4 or M16) 
--Extended Feed Ramps 
--MP HP tested with certification 
--1 in 7" twist 
--Mil Spec Phosphate finish 
--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)