{"product_id":"rosco-manufacturing-bloodline-ar-15-5-56-nato-11-5-m4-barrel-nitride","title":"Rosco Manufacturing Bloodline AR-15 5.56 NATO 11.5\" M4 Barrel - Nitride","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cspan style=\"background-color: #ffff00;\"\u003e\u003cstrong\u003eRosco Manufacturing Bloodline 11.5\" M4 Barrel\u003c\/strong\u003e\u003c\/span\u003e is a standalone \u003cstrong\u003eAR-15 barrel\u003c\/strong\u003e chambered in \u003cspan style=\"background-color: #ffff00;\"\u003e\u003cstrong\u003e5.56x45mm NATO\u003c\/strong\u003e\u003c\/span\u003e. Its compact \u003cstrong\u003e11.5\" length\u003c\/strong\u003e is intended for AR-pistol or short-barreled-rifle configurations, and the barrel is offered in \u003cspan style=\"background-color: #ffff00;\"\u003e\u003cstrong\u003eNew condition\u003c\/strong\u003e\u003c\/span\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eRosco machines this Bloodline barrel from \u003cstrong\u003e4150 chrome-moly-vanadium steel\u003c\/strong\u003e with an \u003cstrong\u003eM4 profile\u003c\/strong\u003e. The barrel and M4 barrel extension have a \u003cstrong\u003eblack nitride finish\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eA \u003cstrong\u003e1:7 twist rate\u003c\/strong\u003e handles the rifling specification, while the \u003cstrong\u003ecarbine-length gas system\u003c\/strong\u003e uses a \u003cstrong\u003e0.750\" gas-block journal\u003c\/strong\u003e. At the muzzle, \u003cstrong\u003e1\/2x28 threads\u003c\/strong\u003e provide the standard interface for compatible 5.56 muzzle devices, and the bore terminates in an \u003cstrong\u003e11-degree crown\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e","brand":"Rosco Manufacturing","offers":[{"title":"Default Title","offer_id":54988209783106,"sku":"179458","price":132.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_b5097e99-09fc-4ad3-9cbd-327db53508cd.png?v=1784128198","url":"https:\/\/centerfiresystems.com\/products\/rosco-manufacturing-bloodline-ar-15-5-56-nato-11-5-m4-barrel-nitride","provider":"Centerfire Systems","version":"1.0","type":"link"}