Upgrade your blaster for any mission or battle with the nerf modulus storage stock it easily attaches to nerf modulus blasters to provide added stability the stock is also extendable so battlers can adjust it for a custom fit flip open the stock butt to reveal storage for extra darts expand the customising options with nerf modulus upgrade kits and accessories with the full nerf modulus system over 1000 different combinations are possible a great gift for nerf soldiers aged eight and up