The Storage Stock is an extendable stock that also allows the user to store items in the back. The stock extends much like the Raider shoulder stock, as it has four points of extension. To change the size of the stock, press the orange button and adjust to the desired length. There is a door on the back that snaps shut to keep the contents inside. Up to ten darts can be stored comfortably but anything small enough to fit can be stored safely.