Faxon Firearms Gunner Barrel Features The Faxon Firearms Gunner barrel is machined from 416R stainless steel with a 1:8 twist rate giving it the stability needed to stabilize both light and heavy .338 ARC projectiles for consistent downrange accuracy. The Gunner profile blends the rigidity of a government contour with the reduced weight of a pencil profile improving overall rifle balance and reducing fatigue during extended shooting sessions. A pistol-length gas system is tuned for smooth reliable cycling in a .338 ARC AR-15 build while the 5/8x24 threaded muzzle accepts standard .30-caliber suppressors and muzzle devices. Each barrel is button rifled for match-grade consistency from the first shot to the last. Every Faxon barrel undergoes Magnetic Particle Inspection and individual headspacing with precision PTG gauges ensuring tight tolerances and dependable safe operation before it ever leaves the factory. The Black Nitride finish provides strong corrosion and wear resistance while giving the barrel a sleek low-maintenance exterior. Manufactured 100 percent in-house at Faxon Firearms in Cincinnati Ohio this barrel reflects close control over materials and machining at every step of production. Builders looking to add an accurate durable .338 ARC upper to their AR-15 platform will find this Gunner barrel a proven American-made option. Faxon Firearms Gunner Specifications Brand: Faxon Firearms Model: Gunner Caliber: .338 ARC Compatible Hosts: AR-15 Material: 416R Stainless Steel Finish: Black Nitride Barrel Type: Button Rifled Twist Rate: 1:8 Barrel Length: 16 Gas System: Pistol Length Thread Pattern: 5/8x24 Gas Block Diameter: .750 Weight: 1.40 lbs Available At: GrabAGun