This is a cheap (in price) and easy way to make a simple pen gun.

Step 1: What You'll Need

You will need: - A BIC Ultra Round Stic Grip pen - A G2 Pilot pen - A paper clip bent to the shape of an 'S'

Step 2: Take It Apart

Completely disassemble the pen

Step 3: The Spring

Taking the spring is the hard part. Carefully put one end of the paper clip in the nose of the pen and push the spring out.

Step 4:

Take the cap off. Hold the pen from the grip and pull the grip off.

Step 5: Put It Together

In this order: Insert the large clicker piece, the spring, then the smaller piece with the bigger part facing up. Make sure to push these pieces down to load up the gun( I recommend using the ink to push it down) Then push the grip into the hole you put the pieces inside. Finally, insert the ink through the hole and fire away! (To fire push the clicker piece. )