this is a small, yet powerful pen gun that i made when i was bored.do not under any circumstances, shoot this at any living creature. by the way, this is my first instructable and feel free to comment on it.
Step 1: Parts
you will need :
a ballpoint pen
2 rubber bands
Step 2: Pen disassimbly
unscrew the top and bottom of the pen and take the ink cartridge out of the bottom part that you unscrewed
Step 3: Trigger
cut one of the rubber bands in half and tie it to the bottom of the pen with the other rubber band
Step 4: Loading the gun
put the ink cartridge through the top of the pen
Step 5: Fire!
pull the cut rubber band back with the ink cartridge and let go. have fun with my instructable!