The RIGHT way to make a pen airsoft gun. This one is changed to make it semi auto and have changeable mags to put in more bb's faster.
Step 1: Materials
What you will need
2 or more pens that have round outer casing
tape (preferably electric tape but duct tape works. NO SCOTCH TAPE)
airsoft bb's if you want to use the clip, spitballs if not
Step 2: Disassemble the pen
The first thing to do is take apart the pen. Make sure there is a tube that is the same size all the way through like in my picture. When your taking the little stopper thing in the end off you can usually get it out with the razor or a nail.
Step 3: Bb feed hole
Now you have to cut the hole in the pen where the bb's fall through. It will actually be more like a square. Cut it like i did in the pictures. Be sure when your cutting the short sides to use a sawing motion so the bb's will roll trough the barrel smoothly.
Step 4: Making the mag holder
now you need something to put the mag onto so it stays in place but can be taken out. I used a pen cap. All you do is simply cut off the end of the pen cap to let the bb's fall through into the hole that you just made in the barrel. Then, so you can tape it down, cut two parallel lines both about 1/4 of the way into the pen. When you fold out the flaps back it should look like a banana or a shotgun in a cartoon when elmer fud sticks his fingers in the end and pulls the trigger.