Rubber band gun - no screws required

pinshape

Summary Glue isn't essential, but you'll likely need to adjust for your printer's precision and maybe some hole-drilling or filing will be necessary. This barrel works seamlessly with size 10 rubber bands - after all, a standard is just as effective as any other. The trigger elastic band, on the other hand, requires a size 16. Bring it on - the zombie apocalypse can't come soon enough!