{"product_id":"faxon-firearms-duty-series-ar-15-5-56-nato-10-5-pencil-barrel-black-nitride","title":"Faxon Firearms Duty Series AR-15 5.56 NATO 10.5\" Pencil Barrel - Black Nitride","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cspan style=\"background-color: #ffff00;\"\u003e\u003cstrong\u003eFaxon Firearms Duty Series Pencil barrel\u003c\/strong\u003e\u003c\/span\u003e is a lightweight \u003cstrong\u003eAR-15 barrel\u003c\/strong\u003e for compact, short-barrel configurations. It has a \u003cstrong\u003e10.5\" length\u003c\/strong\u003e and is chambered for \u003cspan style=\"background-color: #ffff00;\"\u003e\u003cstrong\u003e5.56 NATO\u003c\/strong\u003e\u003c\/span\u003e, with compatibility for \u003cstrong\u003e.223 Remington\u003c\/strong\u003e ammunition.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eFaxon manufactures this barrel from \u003cstrong\u003ecertified 4150 CMV gun-barrel-quality steel\u003c\/strong\u003e with \u003cstrong\u003ebutton-cut rifling\u003c\/strong\u003e and a \u003cstrong\u003e1:8 twist rate\u003c\/strong\u003e. The lightweight \u003cstrong\u003ePencil profile\u003c\/strong\u003e brings barrel weight to \u003cstrong\u003e14.4 oz\u003c\/strong\u003e. An \u003cstrong\u003eM4-pattern barrel extension\u003c\/strong\u003e supports its AR-15 application.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe operating layout uses a \u003cstrong\u003ecarbine-length gas system\u003c\/strong\u003e with a \u003cstrong\u003e0.625\" gas-block journal\u003c\/strong\u003e, a \u003cstrong\u003e1.1\" journal length\u003c\/strong\u003e, and a reported \u003cstrong\u003e0.081\" gas port\u003c\/strong\u003e. At the muzzle, \u003cstrong\u003e1\/2x28 threads\u003c\/strong\u003e and an \u003cstrong\u003e11-degree target crown\u003c\/strong\u003e complete the configuration.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eA \u003cstrong\u003eblack QPQ salt-bath nitride finish\u003c\/strong\u003e is applied inside and outside. Model-specific quality checks include full stress relief, air-gauge testing, magnetic-particle inspection, and an individual headspace check. This \u003cspan style=\"background-color: #ffff00;\"\u003e\u003cstrong\u003eNew\u003c\/strong\u003e\u003c\/span\u003e item is the barrel component only and is not the separate pinned gas-block package.\u003c\/span\u003e\u003c\/p\u003e","brand":"Faxon Firearms","offers":[{"title":"Default Title","offer_id":54988323258690,"sku":"169220","price":157.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_d331ba82-89aa-47ba-85d5-b194fdd59422.png?v=1784131479","url":"https:\/\/centerfiresystems.com\/products\/faxon-firearms-duty-series-ar-15-5-56-nato-10-5-pencil-barrel-black-nitride","provider":"Centerfire Systems","version":"1.0","type":"link"}