Ok cool guys, this gives me some ideas.

Another question (I'm not a paintball guy) do the c02 tanks you'd buy at WalMart come filled, or do you have to get them filled somewhere else.

Thanks again,
Chris

I'll get a picture posted, camera is at the shop.

They want me to build them a gun, I told them I'd do it at cost for shooting some of our shirts into the bleachers.

Pardon my ignorance, but what is HPA.

I'll have to look for a ASA regulator, do paintball regulators go down to 100 psi ?

I've built a T-Shirt cannon, and I must say it works good. This is using an air compressor to air up 100 psi or so, but its a one shot Charlie thing.

The booster club for our HS Football team wants one the mascot can shoot to the crowd. (We're also a sign and screen print shop)

I was thinking of ...