The Rosco "Sauce Pack" bundles were created after direct requests from their customers to provide them with the key components needed for their carbine/ pistol builds at a great combined price. The result is a hand-picked list of parts that will produce results right out of the box. All parts within these kits are designed to synchronize together and create an uninterrupted system that will bring every individual component to its peak performance level. The perfect marriage of all the Rosco available Bloodline accessories and their in-house made barrels will make for the ultimate combo in performance and cost savings. The Rosco Manufacturing Bloodline sauce packs feature Mfg: Rosco Manufacturing