This is my greatest invention yet.Its a pen gun version of a sniper rifle. It shoots very very far up to 45 ft. and is able to pierce shoe boxes very deep. I first made this when i was at my cousin's house as a prototype while we were testing out various pen guns with his friend. I have some blueprints that I'll post later on with this instructable.
To make this pen gun you will need a "pentel wow" click pen(or anything similar), a crayola twistables tube, the end of a click pen(green) or something similar, black peg with nail in it, a thin transparent pen tube, a fat pen tube, 4 rubber bands(3 thick and 1 thin), a paper clip, and duct tape.