Faxon Firearms Big Gunner Duty 8.6 Blackout 12in AR-10 Barrel, Nitride, Target Crown A0A863P12NGQ

Product DescriptionDeveloped in partnership with Q for the innovative 8.6 Blackout (8.6 BLK), the Faxon Firearms Big Gunner Duty 12-inch barrel is engineered for accuracy and hard use in AR-10 platforms. Each barrel is machined from 4150 steel bar stock, fully stress-relieved, air-gauge tested, and Magnetic Particle Inspected (MPI) to help ensure consistency and reliability. An 11-degree target crown supports precise shot-to-shot performance, while the pistol-length gas system and Big Gunner profile make this a compact, purpose-built option for 8.6 BLK builds. A salt bath nitride treatment is applied inside and out for enhanced corrosion resistance and wear performance, with a black oxide barrel extension for a clean, durable finish.Product Highlights Purpose-built 12-inch 8.6 Blackout barrel developed with Q to maximize the cartridge’s performance Quality-control focused build: stress-relieved, air-gauge tested, and MPI inspected 11-degree target crown for improved accuracy potential Salt bath nitride inside/out for corrosion resistance and durability AR-10 compatible DPMS Gen 1 .308 extension with M18x1.5 threading and tapered shoulder (adapter included)Specs Brand: FAXON FIREARMS Manufacturer Part Number: A0A863P12NGQ UPC: 816341026377 Caliber: 8.6 Blackout (8.6 BLK) Barrel Length: 12 inches Profile: Big Gunner Gas System Length: Pistol Rifling: Button rifled Crown: 11-degree target crown Material: 4150 steel Finish: Salt Bath Nitride (inside/outside); Black Oxide barrel extension Muzzle Threads: M18x1.5 with tapered shoulder (adapter included) Gas Block Journal: 1.9 inches Compatibility: AR-10; standard DPMS Gen 1 .308 extension Twist Rate: 1:3Disclaimer: 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 product’s manufacturer.