{"product_id":"rosco-manufacturing-k9-11-5in-5-56-nato-nitride-416r-stainless-ar-15-barrel-1-7-k9-115-hy-duffy-556-7","title":"Rosco Manufacturing K9 11.5in 5.56 NATO Nitride 416R Stainless AR-15 Barrel 1:7 K9-115-HY-DUFFY-556-7","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Rosco Manufacturing K9 11.5 inch 5.56 NATO barrel is engineered for hard use with a proprietary patrol-length gas system designed to be smoother than carbine length and more reliable than mid-length. Its optimized gas port is tuned to run reliably suppressed and unsuppressed, while the K9 continuous taper profile helps dissipate heat during sustained firing. Weight is shifted rearward to improve balance when using modern front-end attachments, and an updated target crown (carried over from the Purebred series) enhances harmonics, fit, and finish.\u003c\/p\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e11.5 inch 5.56 NATO barrel with K9 continuous taper profile for efficient heat dissipation\u003c\/li\u003e\n  \u003cli\u003eProprietary patrol-length gas system for smooth cycling and dependable reliability\u003c\/li\u003e\n  \u003cli\u003eOptimized gas port for consistent performance suppressed or unsuppressed\u003c\/li\u003e\n  \u003cli\u003eNitride finish on stainless steel for durability and corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eUpdated target crown for improved harmonics and refined fit and finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBrand: Rosco Manufacturing\u003c\/li\u003e\n  \u003cli\u003eModel: K9\u003c\/li\u003e\n  \u003cli\u003eCaliber: 5.56 NATO\u003c\/li\u003e\n  \u003cli\u003eBarrel Length: 11.50 in\u003c\/li\u003e\n  \u003cli\u003eMaterial: Stainless Steel (416R)\u003c\/li\u003e\n  \u003cli\u003eFinish: Nitride\u003c\/li\u003e\n  \u003cli\u003eTwist Rate: 1:7\u003c\/li\u003e\n  \u003cli\u003eMuzzle Thread: 1\/2 x 28\u003c\/li\u003e\n  \u003cli\u003eGas System Length: Patrol-length\u003c\/li\u003e\n  \u003cli\u003eWeight: 25.47 oz\u003c\/li\u003e\n  \u003cli\u003eMPN: K9-115-HY-DUFFY-556-7\u003c\/li\u003e\n  \u003cli\u003eUPC: 850039693083\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ci\u003eDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.\u003c\/i\u003e\u003c\/p\u003e","brand":"ROSCO MANUFACTURING","offers":[{"title":"Default Title","offer_id":44098975694970,"sku":"FLX-179482","price":179.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1679\/0365\/files\/292862356.png?v=1771250352","url":"https:\/\/tlooutdoors.com\/products\/rosco-manufacturing-k9-11-5in-5-56-nato-nitride-416r-stainless-ar-15-barrel-1-7-k9-115-hy-duffy-556-7","provider":"TLO Outdoors","version":"1.0","type":"link"}