16" CMV 5.56 Mid-Length HBAR Fluted Barrel

Our fluted 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 36oz