This instructable will show you how to make a simple pen gun that will shoot just about anything out of things that you can find at home or in school.
Step 1: Get Materials.
A bic mechanical pencil.
A bic pen of any color (with the cap)
2 rubber bands
Step 2: Disassemble your materials
Second: Take apart the pencil. You can do this by pulling on the head until it comes off, or if it doesn't, just snap it off. Then take out the inner tube and throw the rest away. Take the little black thing off, so you have just the tube.
Third: These are what you need at the end.
Step 3: Assembly
2: Post- poke.
3: Jam the cap as far onto the pen body as you can without breaking it.
4: Measure where to cut in accordance with the inner tube and the pen.
5: Cut at the mark.
6: Put the inner tube inside the pen and cut a notch in the eraser of the inner tube.
7: If needed, you can widen the hole in the pen cap with the front part of the pencil.(just don't push too hard and break the cap.)
Step 5: Loading and firing
To fire, push down on the back part until it snaps back into place.
Step 6: Finished!
(don't shoot it at anyone!!)