This 5.56 chambered 8 inch Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.
Ballistic Advantage BABL556003M Modern Series5.56x45mm NATO 8″ Black QPQ Finish 4150 Chrome Moly Vanadium Steel Material Pistol Length with DRP Profile for AR-15