Never ever fire
elastic bands at other people or animals. It really really hurts losing
an eye! Use a inanimate target like the TV or Grandma. (Only joking Grandma)
You should adjust the length of you
barrel to fit your fully stretched length of elastic band.
Cut another slit 5cm's in length
along the fold at the top of the barrel from the retaining notch back.
This will allow you to slip football cards into the top of the gun which
may be fired great distances!
Use the Green Jello buttons to
pause the animation at the dimensions.