Product Description The Rosco Manufacturing Sauce Pack bundle was created in response to customer demand for a ready-to-build set of key components at a combined value. Designed to work together as a synchronized system, this K9 kit centers around an 11.5" 5.56 NATO AR-15 barrel with a Patrol Length gas system and Melonite finish for durability. The bundle is built to deliver reliable performance right out of the box for compact carbine or pistol builds, with matched parts intended to help the system run smoothly from the start. Product Highlights Complete Rosco Sauce Pack component bundle designed to work together as a matched AR-15 build system K9 11.5" 5.56 NATO barrel ideal for compact AR-15 pistol/SBR-style builds Patrol Length gas system with included Patrol Length gas tube for tuned cycling Melonite-finished barrel for enhanced wear and corrosion resistance Includes bolt carrier group (BCG) and NGB-001 gas block components for a streamlined parts solution Specs Brand: Rosco Manufacturing Series: Sauce Pack Model: K9 Platform/Fit: AR-15 Caliber: 5.56 NATO Barrel Length: 11.5" Gas System: Patrol Length Thread Pattern: 1/2"x28 Finish: Melonite Color: Black Included Components: K9 barrel, Patrol Length gas tube, bolt carrier group (BCG), NGB-001 gas block (bundle components as shown/listed) Manufacturer Part Number: SP-K9-115-556-BCG-GTS UPC: 850039693120 Disclaimer: 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 products manufacturer.