No paintball gun will work without a CO2 tank or other propellant tank. without Co2 there is nothing to push the ball out of the barrel.
Where the air tank or co2 tank normally attaches
Go to a paintball store and pay for them to fill it.
There is no such thing as a "CA" tank.
There is usually 850 psi in a co2 tank. An HPA tank is a totally different story.
With a paintball field CO2 filling station, DO NOT ATTEMPT TO DO ON YOUR OWN!! IF YOU DIDN'T KNOW WHERE TO FILL A TANK UP NEVER FILL ON YOUR OWN!!!
Yes, you can. its a little tricky but it can be done, the issue is you need liquid co2 in your paintball tank and if you just open up that co2 tank only gas will come out, so what you need to do is invert the tank before filling to make sure you get the liquid out of the soda co2 tank
At any local paintball store.
No, do not try to fill a CO2 canister with HPA.
CO2, stored in the tank is highly pressurized. The paintball being shot is caused by it being pushed out by the rapidly expanding gas. CO2 also cycles and reloads the next paintball.
No, any tank will work.