Faxon Firearms Integral Barrel Features The Faxon Firearms Barrel blends the durability of a Government profile with the weight savings of a Pencil profile in its Gunner contour bringing the rifle s balance back toward the shooter s body to reduce fatigue. Its integrally machined flash hider allows full removal of barrel nuts handguards and gas blocks without being locked into a single muzzle device configuration. Chrome moly steel construction with a black nitride finish inside and out resists corrosion and wear from repeated firing. The 1:8 twist rate stabilizes a broad range of 5.56 NATO bullet weights making this barrel versatile for both lightweight and heavier loads. Button rifled for consistent accuracy and finished with an 11 degree target crown this barrel is built to perform straight out of the box on any AR-15 platform. Magnetic particle inspection ensures each barrel is free of hidden flaws before it ships giving builders confidence in long-term reliability. At 1.35 lbs and fitted with an M4 barrel extension and 0.625 inch gas block diameter it drops into standard AR-15 builds without modification. Builders who want the compliance of a 16 inch barrel with the feel of a shorter carbine will appreciate this Faxon offering. Faxon Firearms Integral Barrel Specifications Manufacturer: Faxon Firearms Model: Integral Barrel Caliber: 5.56 Barrel Length: 16 Barrel Finish: Black Nitride Barrel Material: Chrome Moly Steel Barrel Type: Button Rifled Twist Rate: 1:8 Barrel Description: Gunner Profile Integral Flash Hider Gas System: Mid Length Thread Pattern: 1/2x28 Gas Block Diameter: .625 Compatible Hosts: AR-15 Weight: 1.35 lbs Available At: GrabAGun