Faxon Firearms Duty Series Barrel Features The Faxon Firearms AR-15 Barrel is machined from 4150 chrome moly vanadium steel and button rifled for consistent accuracy then finished in black nitride for a hard corrosion-resistant surface. Chambered in 5.56 NATO the 16 barrel uses a 1:8 twist rate suited to a wide range of bullet weights making it a versatile choice for duty or general-purpose builds. The HBAR profile adds heft for heat management during sustained fire while keeping the barrel balanced on the rifle. An 11-degree target crown protects the muzzle s rifling from damage while supporting accuracy. A mid-length gas system provides smoother cycling and reduced felt recoil compared to a carbine-length setup easing the impulse on the shooter and the rifle s internals. The barrel is threaded 1/2-28 TPI and fitted with a .750 gas block journal ready to accept standard AR-15 muzzle devices and gas blocks. Every barrel is magnetic particle inspected to catch material flaws before it reaches the shooter reflecting Faxon s quality control standards. At 1.65 lbs this barrel is a dependable upgrade for shooters building a duty-grade or range rifle. Faxon Firearms Duty Series Barrel Specifications Manufacturer: Faxon Firearms Model: Duty Series Barrel Caliber: 5.56 Barrel Length: 16 Material: 4150 Chrome Moly Vanadium Finish: Black Nitride Barrel Type: Button Rifled Twist Rate: 1:8 Barrel Profile: HBAR Gas System Length: Mid Length Thread Pattern: 1/2x28 Gas Block Diameter: .750 Weight: 1.65 lbs Available At: GrabAGun