Mini "crossbow" (no elastic bands)

This is a little "crossbow", made to fire out cotton wool buds.
It's not as powerful as others, but it's designed to be fully 3d printed. It uses a printed spring, so no elastic/rubber bands are needed. There are two versions, the normal one with one spring, and a dual one (which may be more powerful?).
Everything should be a snug fit, but you may need to glue the pins and springs in place, depending on your printer.

It generally works as intended, but could always be improved so is a bit of a work in progress.

Probably best to be printed in PLA. I've not tried any other materials with this, but I've heard springs are better in PLA, so at least make sure that the spring is PLA.