--- title: "Rosco Manufacturing K9 12.5\" 5.56 NATO Barrel" description: "Black 12.5\" 5.56 NATO barrel with a patrol-length gas system, continuous taper profile, updated target crown, and included patrol-length gas tube." canonical_url: "https://www.kygunco.com/product/rosco-manufacturing-k9-sage-dynamics-5.56-nato-12.5-blk-patrol-length" meta: author: KYGUNCO "og:description": "Black 12.5\" 5.56 NATO barrel with a patrol-length gas system, continuous taper profile, updated target crown, and included patrol-length gas tube." "og:image": "https://cdn.kygunco.com/assets/products/272436/thumbnail.jpg?v=1733337331" "og:image:height": "500" "og:image:width": "500" "og:title": "Rosco Manufacturing K9 12.5\" 5.56 NATO Barrel" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Gun Parts](https://www.kygunco.com/category/shooting/gun-parts) / [Handgun & Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts) / [Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts) / [Rifle Barrels](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts/rifle-barrels) / RSC-K9-125-HY-SAGE-556-7-P ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/272436/main.jpg?v=1733337331) For illustration purposes only, this image may not be an exact representation of the product. # ROSCO MANUFACTURING K9 Sage Dynamics 5.56 NATO 12.5" Blk Patrol Length The Rosco Manufacturing K9 12.5" barrel is chambered in 5.56 NATO and features a black finish, proprietary patrol-length gas system, and continuous taper profile. An updated target crown supports refined harmonics, while the barrel includes a patrol-length gas tube for installation. $171 ** 5 interest-free payments of **$34.20** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Handled by our expert shippers in Bardstown, KY. Item # 272436 Style RSC-K9-125-HY-SAGE-556-7-P UPC 850039693069 Condition New Manufacturer [Rosco Manufacturing](https://www.kygunco.com/brand/rosco-manufacturing) The K9 12.5 offers a proprietary patrol length gas system that is smoother than a carbine length, and more reliable than a mid-length. Because this is the optimal amount of gas, the barrel runs reliable suppressed and/or unsuppressed. The K9 continuous taper profile is a proven profile from the past and the best to dissipate the heat from hard use. Updated target crown carried over from the Purebred series. Features no 90 degree cuts, improved harmonics and fit and finish. NOTE: COMES WITH PATROL LENGTH GAS TUBE Shop with KYGUNCO for the best selection, competitive pricing, and exceptional customer service. Experience the difference that comes with buying from a trusted outdoor retailer with over 20 years of experience in the industry. ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## More from Rosco Manufacturing ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/rosco-manufacturing-k9-sage-dynamics-5.56-nato-12.5-blk-patrol-length#webpage","@type":"WebPage","description":"Black 12.5\" 5.56 NATO barrel with a patrol-length gas system, continuous taper profile, updated target crown, and included patrol-length gas tube.","name":"Rosco Manufacturing K9 12.5\" 5.56 NATO 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