By tanks I take it you mean a divers bottle that will then be used to store pressurized air until you need it? Anywhere that has a compressor, such as diving centers, fire stations, gun shops etc. The standard charge is about £3 and a divers tank will fill the air rifles cylinder lots of times!
If you do not want to buy a diving tank then the hand pump is the option - something like this:
http://www.uttings.co.uk/Product/678/104200/fx-three-stage-hand-pump-fx9000/
I know it adds cost but the action on the bolt driven multishot pcp rifles will put a smile on your face!
If you do not want to buy a diving tank then the hand pump is the option - something like this:
http://www.uttings.co.uk/Product/678/104200/fx-three-stage-hand-pump-fx9000/
I know it adds cost but the action on the bolt driven multishot pcp rifles will put a smile on your face!