Simple Pen Gun
This is a cool pen gun that can be made in under a minute with a Pilot G-2 seven or 10 mm pen. It shoots about ten to fifteen feet. All you require is the Pilot G-2 pen. Make sure that you use that this specific pen only, because no other pen functions like so and can be made into a gun.
Step 1
Unscrew the top of the pen and remove the ink cartridge.
Step 2
Push the pen's retracting/extending pieces on the end out with the cartridge.
Then, whack the other end of the pen lightly but rapidly against a surface hard to pop out the spring. You can now discard the end of the pen, you no longer need it.
Then, whack the other end of the pen lightly but rapidly against a surface hard to pop out the spring. You can now discard the end of the pen, you no longer need it.
Step 3
Drop the top of the extender/retractor into the other end of the pen's shell.
Drop in the spring.
Drop in the other half of the extender.
Drop in the spring.
Drop in the other half of the extender.
Step 5
Push the parts in tightly wit the cartridge, which you now no longer need. Congratz! You have finished with your pen gun and can now shoot at classmates/co-workers by pushing the extender piece down.