• tape (your choice)
Step 1: Barral
Cut the top off a bottle
Step 2: Power
Cut the fingers off the glove (perforable the three main ones).
Step 3: Putting It Together
Attach the fin gets to the barrel. You can use tape but I don't for easy change.
Step 4: Firing
Put the ammo in the finger and grab the ammo in the finger and pull and fire(you can putt rocks in there too.