do you think i should use a sprinkler for my first gun or what u said?

i wrote up the plans for my gun, its pretty simple, juste a air valve in a piece of 3/4" 2' pvc for the air chamber with an elbow to another elbow to a sprinkler valve then to a 3' barrel.

1 more question. how do you release the air from a sprinkler valve and do you have to mod it?

turbohacker: I told him about the wiki but he just got lost there.

brod man: a sprinkler valve($10-15) is a type of diaphragm valve that is used in sprinkler systems. Home Depot or lowes will have them near the pvc pipe. And yes use pvc.Use the link that hi gave you to mod the valve. Your basic ...

okay i get it try to avoid bottles and use a sprinkler valve. im new to this, whats a sprinkler valve, and how much more would it cost? should i use pvc for a air chamber?

a 2 lt. bottle for the air chamber, and a ball valve for the trigger. use a bike pump to pump it up, and just open the valve? (consrtuctive criticism hurts but is welcomed.)