turn on/off valves??
ok this might be a true newbie question, but i figure i might as well ask it so i don't waste any money. if i buy a tank and i add the on/off valve. is it built into the tank? can it be removed? i plan on buying a 20oz and like a 9oz tank. do i need to get he on/off option on both of them? if i don't get he on/off on the tanks. can i buy the smart parts on/off valve for 14 bucks and be used on both tanks? i thought the valve was something u kept connected to the marker and then just screwed the tanks to the valve. is this right?
hope to figure out which gun i want soon