ROSCO SP-BL-105-556-BCG-GTC-NGB-001 SAUCEPACK+URGThe Rosco Sauce Pack bundles were created after direct requests from 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 un interrupted system that will bring every individual component to its peak performance level.