16" CMV 5.56 Mid-Length HBAR Barrel

Our 5.56 chambered 16-inch HBAR Mid-Length Barrel is machined from 4150 Chrome Moly Vanadium steel with a Black Nitride Corrosion Resistant Finish and Black Nitride Corrosion Resistant coated M4 feed ramp extension. 4150 has a 0.50% carbon content and is used for barrels that need to be tougher, have more strength, and higher hardness than 4140 or 4130 can provide. It's a little less common and takes a little extra effort to machine but produces the right results. Additional Info Length 16" Material 4150 Chrome Moly Vanadium Profile HBAR Finish Black Nitride Corrosion Resistant Gas System Length Mid-Length Gas Block Journal .750" Twist Rate 1:7 inches Rifling 5R Muzzle 1/2x28 Threaded Weight 37oz