paintba c02 tanks?

Can you get something to attach to your c02 tanks to make it bleed off right for this?

I wondered this myself, as I play.
But I don't think you can.

wat i did was screw the tank on half way and let it shoot out like tht then shut the door, i had a 9oz one and let it all go

no rig your gun up in your room and design a device which fires the gun at set intervals , releasing co2