--- title: "Rosco Manufacturing 300 BLK Heavy Barrel Black" description: "16\" 300 BLK heavy barrel in black with a 5/8x24 muzzle thread. Designed for carbine builds using supersonic ammunition." canonical_url: "https://www.kygunco.com/product/rosco-manufacturing-bloodline-heavy-barrel-300-blk-16-black-5-8x24" meta: author: KYGUNCO "og:description": "16\" 300 BLK heavy barrel in black with a 5/8x24 muzzle thread. Designed for carbine builds using supersonic ammunition." "og:image": "https://cdn.kygunco.com/assets/products/272434/thumbnail.jpg?v=1733337330" "og:image:height": "500" "og:image:width": "500" "og:title": "Rosco Manufacturing 300 BLK Heavy Barrel Black" --- > 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-BL-16-HB-300BLK-8-P ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/272434/main.jpg?v=1733337330) For illustration purposes only, this image may not be an exact representation of the product. # ROSCO MANUFACTURING Bloodline Heavy Barrel 300 Blk 16" Black 5/8x24 The Rosco Manufacturing Bloodline is a 16-inch, heavy-profile barrel chambered in 300 Blackout. It features a black finish and 5/8x24 muzzle threading, with design considerations for accuracy and suppressor-friendly use across 300 BLK applications. $178.20 ** 5 interest-free payments of **$35.64** 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 # 272434 Style RSC-BL-16-HB-300BLK-8-P UPC 181969500135 Condition New Manufacturer [Rosco Manufacturing](https://www.kygunco.com/brand/rosco-manufacturing) This Rosco 16" 300 Blackout (300 BLK) barrel is perfectly suited for carbines shooters that plan on running only supersonic ammo, or are building a well-balanced hunting platform. Rosco 300 Blackout barrels were created by using input from SOCOM end users and some of the original creators of the 300 Blackout caliber. Every barrel was designed to optimize the original role for this caliber; to be suppressor friendly and accurate. It is Rosco's goal to get you the performance that you seek out of these barrels when running sub-sonic ammo or supersonic ammo (depending on barrel length). Twist rates, gas port diameters, and lengths have all been taken into account when we set out to make these. Let's just say that we don't like leaving things to chance. 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-bloodline-heavy-barrel-300-blk-16-black-5-8x24#webpage","@type":"WebPage","description":"16\" 300 BLK heavy barrel in black with a 5/8x24 muzzle thread. 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