{"product_id":"faxon-firearms-big-gunner-duty-8-6-blackout-12-1-3-twist-4150-steel-ar-10-barrel-black-oxide","title":"Faxon Firearms Big Gunner Duty 8.6 Blackout 12\" 1:3 Twist 4150 Steel AR-10 Barrel - Black Oxide","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eFaxon Firearms Big Gunner Duty\u003c\/span\u003e\u003c\/strong\u003e barrel in \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e8.6 Blackout\u003c\/span\u003e\u003c\/strong\u003e is a 12\" heavy-profile replacement barrel built for hard-use \u003cstrong\u003eAR-10\u003c\/strong\u003e platforms chambered in the new 8.6 BLK cartridge. Machined from certified \u003cstrong\u003e4150 steel\u003c\/strong\u003e and \u003cstrong\u003ebutton rifled\u003c\/strong\u003e with a fast \u003cstrong\u003e1:3\" twist\u003c\/strong\u003e, this barrel is engineered to stabilize both subsonic and supersonic 8.6 BLK projectiles, including heavy supersonic loads designed for maximum energy on target.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe barrel features the signature \u003cstrong\u003eBig Gunner\u003c\/strong\u003e contour - a heavier profile that resists barrel whip and improves heat dissipation during sustained fire. A \u003cstrong\u003etarget crown\u003c\/strong\u003e protects the muzzle from contact damage, while the \u003cstrong\u003eBlack Oxide\u003c\/strong\u003e finish provides a durable, low-reflectivity surface. The barrel uses a DPMS Gen 1-pattern \u003cstrong\u003e.308 extension\u003c\/strong\u003e for drop-in compatibility with standard AR-10 bolt carrier groups and upper receivers.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003ePart of the \u003cstrong\u003eFaxon Duty Series\u003c\/strong\u003e, this 12\" 8.6 Blackout barrel is built for compact AR-10 builds, suppressed setups, and any application where shorter overall length and maneuverability matter. Every Faxon barrel is magnetic particle inspected (MPI) and air-gauge tested to verify concentricity and deliver consistent performance round after round.\u003c\/span\u003e\u003c\/p\u003e","brand":"Faxon Firearms","offers":[{"title":"Default Title","offer_id":55086346797378,"sku":"161572","price":214.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_2be42f1f-f6bb-4728-8fcc-90b31c3e58e2.png?v=1784771023","url":"https:\/\/centerfiresystems.com\/products\/faxon-firearms-big-gunner-duty-8-6-blackout-12-1-3-twist-4150-steel-ar-10-barrel-black-oxide","provider":"Centerfire Systems","version":"1.0","type":"link"}