Faxon Firearms 10.5" 5.56 NATO Carbine-Length 4150 Barrel

Faxon Firearms 10.5" 5.56 NATO Carbine-Length 4150 Barrel Every Faxon Barrel undergoes a battery of tests at each fabrication operation until it is finished in Nitride, then inspected. Every barrel is individually checked for headspace using precision, custom-hardened gauges. Features Barrel Material: 4150 CMV Steel Barrel Type: Button Rifled Barrel Caliber: 5.56 NATO Barrel Twist: 1:8 Barrel Length: 10.5" Barrel Profile: Light Barrel Gas System: Carbine Inside Finish: QPQ Nitride Outside Finish: QPQ Nitride Muzzle Thread: 1/2-28 TPI (Threads Per Inch) Gas Block Diameter: .750 Gas Block Journal Length: 1.1" Barrel Extension: M4 Weight: 1.10 lbs Magnetic Particle Inspected 11-degree Target Crown All NFA/ATF Rules Apply You may use this AR-15 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.