A little while back I made an instructable showing how to make a pen gun with only a pen. People seemed to like it, so I decided to make a follow-up Instructable. This one has a trigger, a better loading system, and looks much nicer. Plus, it still functions as a pen! I hope you all like it. If so, I can make more office supply toys in the future.
Step 1: Parts
To make this gun, you'll need a pen. Any Pilot G-2 style pen will do, as long as it has the six parts shown.
Step 2: Reassembly
Reassemble the pen as shown in the picture.
Step 3: Finished!
This is the completed gun with its covert cover on. To fire, simply remove the cover, press the ink cartridge down until you hear it click, and then press the button. One thing to note is that the pen parts will go flying when you fire, so keep track of them unless you want this to be a single-shot gun.