Product DescriptionThe Faxon Firearms Duty Series 16" Gunner .300 Blackout (300 BLK) AR-15 barrel is engineered to deliver an ideal balance of strength, weight savings, and handling. Faxons Gunner profile blends the durability of a Government contour near the chamber with Pencil-like agility toward the muzzle, helping keep the rifle balanced and reducing fatigue during long training days, range sessions, or hunts. Built from 4150 CMV steel and finished with a salt bath nitride treatment inside and out, this barrel is designed for long service life, corrosion resistance, and easier cleaning. Each barrel is manufactured in-house in Cincinnati, Ohio, then stress relieved, air-gauge tested, and individually headspace checked for consistent reliability and accuracy.Product Highlights16" Gunner profile balances Government strength with lightweight, quick-handling performance300 Blackout chambering with a 1:8 twist for versatile load performance4150 CMV steel construction for durability and heat resistance in hard-use buildsSalt bath nitride finish (inside & out) for corrosion resistance and extended barrel lifePrecision quality control including stress relief, air-gauging, MPI inspection, and headspace verificationSpecsBrand: Faxon FirearmsSeries: Duty SeriesCaliber/Chamber: 300 Blackout (300 BLK)Barrel Length: 16"Barrel Profile: GunnerMaterial: 4150 CMV steelRifling Method: Button rifledTwist Rate: 1:8Gas System Length: Carbine-lengthFinish (Inside): NitrideFinish (Outside): NitrideMuzzle Threads: 5/8x24Gas Block Diameter: .750"Gas Block Journal Length: 1.9"Barrel Extension: M4Crown: 11-degree target crownWeight: 1.48 lbCountry of Manufacture: USA (Cincinnati, Ohio)UPC: 816341023222Manufacturer Part Number: 15A38C16NGQDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the products manufacturer.