how do you make a cheap paintball gun under 20 dollars?

Question

it has to work.

Answer 1

a slingshot

Answer 2

you really can't just the tank will cost you $20. here is an idea. it is just a paintball granade launcher scaled down to a .69 call paintball. if you get a Pvc pipe that has an intierior diameter of about .69 in, cap one end, conect a braided hose to the cap, then you need an on off air switch, then an charge chamber, then another switch, then a remote line to the air tank. you can brop a ball down the barel and use it line a musket. good luck.