{"product_id":"rosco-manufacturing-k9-ar-15-5-56-nato-16-1-7-twist-416r-stainless-steel-barrel-nitride","title":"Rosco Manufacturing K9 AR-15 5.56 NATO 16\" 1:7 Twist 416R Stainless Steel Barrel - Nitride","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eRosco Manufacturing K9\u003c\/span\u003e\u003c\/strong\u003e barrel is a precision 16-inch \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e5.56 NATO\u003c\/span\u003e\u003c\/strong\u003e replacement barrel built for the \u003cstrong\u003eAR-15\u003c\/strong\u003e platform. Cut from \u003cstrong\u003e416R stainless steel\u003c\/strong\u003e and finished in black \u003cstrong\u003enitride (Melonite)\u003c\/strong\u003e, it pairs a \u003cstrong\u003e1:7\" twist\u003c\/strong\u003e with an \u003cstrong\u003eintermediate-length gas system\u003c\/strong\u003e and an optimized gas port engineered to cycle reliably suppressed and unsuppressed.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe K9 uses Rosco's continuous (hatchet) profile and weighs roughly \u003cstrong\u003e34.5 oz\u003c\/strong\u003e. The muzzle is threaded \u003cstrong\u003e1\/2x28\u003c\/strong\u003e to accept standard AR-15 muzzle devices, and the barrel is chambered in \u003cstrong\u003e5.56 NATO\u003c\/strong\u003e. The \u003cstrong\u003e1:7 twist rate\u003c\/strong\u003e stabilizes a broad range of bullet weights commonly used in 5.56 NATO applications.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThis is a barrel-only item, ready to drop into any standard AR-15 upper assembly. It ships without a barrel nut, gas block, or additional small parts, making it a clean foundation for a new build or a suppressor-ready upgrade to an existing rifle.\u003c\/span\u003e\u003c\/p\u003e","brand":"Rosco Manufacturing","offers":[{"title":"Default Title","offer_id":55048696627522,"sku":"179485","price":187.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_f9a65d98-ac75-4823-a61b-1eea9e977a6b.png?v=1784702452","url":"https:\/\/centerfiresystems.com\/products\/rosco-manufacturing-k9-ar-15-5-56-nato-16-1-7-twist-416r-stainless-steel-barrel-nitride","provider":"Centerfire Systems","version":"1.0","type":"link"}