This is a very easy gun that I came up with for rubber band wars. It is a pistol that shoots about 8". I am not responsible for your actions. MAKE AT YOUR OWN RISK!
Step 1: Supplies
3 pencils (not sharpend)
Small rubber band
Hot glue gun
Step 2: Pencils
Make 4 wraps around the pencils about an inch apart from each other as shown.
Step 3: Gluing
Put a lot of hot glue on the bottom
of each clothes pin and put it at the end of the pencil.
Step 4: Almost Done
When the glue is dry take your rubber band and hook it in the clothe pin then stretch it over the end.