The upgraded modular conversion kit for Tippmann Stormer Basic paintball marker gun includes a 6-position collapsible stock, front shroud, magazine/loaders, foregrip and sights. The stock is a great addition for giving back aiming capabilities when using remote lines! This Mod Kit is great for getting more features from the base Stormer model. These is 100% certified Tippmann parts. Don't forget Paintballs!