Updated to prevent the plunger from coming out of the tube. Allows for “easy rapid fire”.

This was basically just scaling up and down existing pieces then mashing them together + some boolean modifiers in Blender.

I had some issues with the screw cap going on all the way, but get's plenty tight/is nothing but an eyesore. I don't think I'll have time in the foreseeable future to adjust - if it bothers you please make the fix :) and post if you do!

Happy Printing!