Pokemonmaster247 here. I'm going to be teaching you how to make a pen bow and arrow. I think it shoots pretty decently. If you don't think so or if you have any "upgrades" to this tell me in the comments.(btw this is my first instructable).
CAUTION. I am not responsible for what you do with this,and don't point at faces.

Step 1: What You Need

You will need
-a pocket knife (w/a knife and sander and a leather puncher)
-dremel (if you don't have the sander)
-Paper Mate pens (eagle)
-rubber bands i would use the ones that are from rubber band guns(pistols)
- tape(optional)

Step 2: Dissasemble and Cut Hole

First you will take the pen apart. You will need to keep everything except the cap and the stopper(in the back). then you will need to take the body(of the pen), and find the center(in the middle of the "t" and "e") and put a hole through it. You want to make it big enough to fit the "cover" in. Make sure that it fits snugly. If you don't put it close enough to the center it won't shoot as hard.

Step 3: Fitting the Ruberband

(optional, this is where the dremel comes in)First you will need to make notches on each side of the body. Then you will fit the rubber band on the notches. Make sure that the rubber band goes around the cover(so it doesn't get in the way). If you want you can tape the front part of the rubber band to body. Make sure that it is just a little bit(it should just go around about 2x at most.

Step 4: Making the Arrow

There are 2 kinds of bullets
-Heavy Duty. Heavy Duty is an arrow with an extra cover on it.
-Light. Light is a plain arrow

The basic of making the arrow is that it is the ink cartridge from the Paper Mate Eagle pen.

Step 5: Firing the Arrow.

To fire the b&a you will take the arrow ,and load it through the cover onto the rubber band. Then pull back with the arrow on the rubber band while it's being pulled back. Don't fire it at hard surfaces like;walls, ceilings,etc, if you do (depending on how close and how hard it hits) it will crack the back of the arrow.One time it went all the way to the ink and it started leaking out. REMEMBER DON'T AIM, POINT, OR SHOOT AT ANYONE OR YOURSELF.