I wish every blaster with a battery just came with the thumb screw.
It’s perfect, don’t need to carry an Allen wrench
Works great wish this was on there from the get go.
So, you got yourself a Jupiter from out of darts, but you don't have the thumb screw to get into the battery compartment without tools. Exactly what is wrong with you? You spend good money on a great 3D printed blaster and you don't trick it out because of $2.50? That's it we can't be friends I just don't understand you anymore!
Let me just say in closing if you value my friendship and you have a Jupiter get the thumbscrew. Save a friendship!