"Spear Gun" From a Mechanical Pencil

In this ible I will be showing you how to make gun with a trigger with a mechanical pencil and other office supplies. This design is one I came up with while I was bored out of my mind during class. I believe I have come up with it as I have never seen another like it. The goal of this project was to come up with a gun with simple materials and a working trigger.
Hope you enjoy, I would love to hear your questions, comments, concerns, and criticisms.

Remove the cap from your mechanical pencil, push forward the bead in the front, and cut the small wire that attaches to this bead. After doing this you should be able to take apart your mechanical pencil. Put aside the cap and what you have cut and you should be left with only the body and the pipe with the eraser that held the lead. Cut the eraser piece in half.

On the back of the mechanical pencil, notice that the clip on mine is broken, do the same to yours. Stretch the grippy over the clip.
On the front of the pencil get your broken rubber band and put the two ends on the sides, making sure they're in alignment with the clip, and wrap another rubber band around it keeping it in place.