This 5.56 chambered 16 inch Performance Series Barrel is machined
from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant
Finish. Our performance series barrels feature a Nickel Boron Coated
Extended M4 Feed Ramp Extension.
Hanson Series Barrels feature our proprietary BA Hanson
profile and include a pinned lo-pro gas block. Hanson barrels are not
designed to work with aftermarket piston kits.