If you removed your Nerf Rapidstrike's stock, you now have a big hole in the back of your blaster. Cover it up with this fitted butt plate.
Two versions are provided - one has a cutout for a USB port or charging cable, the other is solid.
Whether you wanted a lighter blaster or more room for electronics and batteries, you can now safely remove your stock without a big, gaping hole in your blaster's backside.