This is an instructable on how to build a clothes pin gun. I have seen variations of this, but never this exact gun.
Step 1: What You Need
This is a list of supplies:
1: clothes pin
2: rubber band
almost all (except for saw) of these items are available at a supermarket or grocery store
Step 2: Disassemble
Disassemble the clothes pin, and do not throw away any pieces.
Step 3: Saw
Saw one of the wooden clothes pin pieces in half
Step 4: Cut
Cut a notch in the other wooden piece.
Step 5: Rubber-band
Rubber-band the two pieces together, like in the picture.
Step 6: Trigger
Slide on the metal piece , spring first, with one metal bar on ether side of the bottom wooden piece.
Step 7: How to Use It
To cock the gun, slide the top wooden piece forward until one of the metal pieces clicks into the hole in it.
Step 8: Ammo
To make ammo, cut the bottom of of a toothpick
Step 9: Congragulations!!
Congrats! Have fun shooting it.