{"product_id":"faxon-firearms-gunner-duty-series-5-56-nato-12-5-1-8-black-nitride-ar-15-barrel","title":"Faxon Firearms Gunner Duty Series 5.56 NATO 12.5\" 1:8 Black Nitride AR-15 Barrel","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eFaxon Firearms Gunner Duty Series\u003c\/span\u003e\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e5.56 NATO\u003c\/span\u003e\u003c\/strong\u003e \u003cstrong\u003e12.5\"\u003c\/strong\u003e barrel is a precision button-rifled AR-15 barrel machined in-house from \u003cstrong\u003e4150 Chrome Moly Vanadium (CMV)\u003c\/strong\u003e steel and finished in a corrosion-resistant \u003cstrong\u003eBlack Nitride\u003c\/strong\u003e coating. Built around Faxon's lighter-weight \u003cstrong\u003eGunner profile\u003c\/strong\u003e for a balanced, lightweight build, it is a natural fit for compact AR-15 carbine and pistol projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eDesigned around a \u003cstrong\u003e1:8\" rifling twist\u003c\/strong\u003e for use with \u003cstrong\u003e5.56 NATO\u003c\/strong\u003e and .223 Remington ammunition, this barrel is gas-system tuned for a \u003cstrong\u003emid-length\u003c\/strong\u003e direct-impingement setup. Every barrel is fully stress relieved, air-gauge tested, and finished with an 11-degree target crown for consistent accuracy and concentric bullet release.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eAs part of the \u003cstrong\u003eDuty Series\u003c\/strong\u003e, this \u003cstrong\u003e12.5\"\u003c\/strong\u003e Gunner barrel is engineered for hard use and backed by Faxon's reputation for tight tolerances and consistent quality. It is \u003cstrong\u003emade in the USA\u003c\/strong\u003e and ready to install in any standard AR-15 upper receiver assembly.\u003c\/span\u003e\u003c\/p\u003e","brand":"Faxon Firearms","offers":[{"title":"Default Title","offer_id":55472980394306,"sku":"169223","price":161.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_4110badf-1f3c-44b0-8659-ccaf0376f713.png?v=1785479651","url":"https:\/\/centerfiresystems.com\/products\/faxon-firearms-gunner-duty-series-5-56-nato-12-5-1-8-black-nitride-ar-15-barrel","provider":"Centerfire Systems","version":"1.0","type":"link"}