Ballistic Advantage

This .300 Blackout chambered 9 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. All NFA/ATF Rules Apply. You may use this barrel with a lower receiver that is a Registered SBR, Machine Gun, or Pistol. Possession of this barrel along with a Non-NFA lower receiver is Prohibited, except when installed on a Pistol configuration firearm. Features : - "Length: 9";"Material: 4150 Chrome Moly Vanadium" - Profile: DRP - Finish: QPQ Corrosion Resistant - Gas System Length: Pistol - "Gas Block Journal: .750";"Twist Rate: 1:7 inches" - Muzzle: 5/8x24 Threaded - Weight: 21oz