Rosco Sauce Pack K9 Barrel Features The Rosco Manufacturing Sauce Pack K9 was built after direct requests from customers for a hand-picked set of key components for carbine and pistol builds at a strong combined price. At the center of the kit is a 13.95 inch 416R stainless barrel with a 1:7 twist rate finished in black nitride for corrosion resistance and smooth function. The mid length gas system paired with the included K9 patrol length gas tube is tuned to work specifically with this barrel length keeping cycling reliable and recoil impulse manageable. A 1/2x28 muzzle thread accepts standard 5.56 compensators flash hiders or suppressor mounts. Rounding out the kit is a Bloodline bolt carrier group compatible with both 5.56 and .300 Blackout along with a non-adjustable Bloodline gas block matched to the barrel s gas port. Every component in the Sauce Pack is designed to synchronize together so the barrel BCG gas block and gas tube work as one uninterrupted system rather than a loose assortment of mismatched parts. This pairing of Rosco s in-house barrel manufacturing with their Bloodline accessory line results in a combination built for both performance and cost savings. For builders assembling an AR-15 upper from the ground up the Sauce Pack K9 offers a proven complete starting point. Rosco Sauce Pack K9 Barrel Specifications Manufacturer: Rosco Model: Sauce Pack K9 Caliber: 5.56 NATO Barrel Length: 13.95 Barrel Material: 416R Stainless Barrel Finish: Black Nitride Twist: 1:7 Thread Pattern: 1/2x28 Gas System: Mid Length Compatible Hosts: AR-15 Includes: Barrel Bolt Carrier Group Gas Tube Gas Block Color: Black Weight: 27.05 oz Available At: GrabAGun