Depends on the tanks, better question to ask the guys that fill your tanks. I'm sure there's an adapter out there to connect just about any tank to an airgun, but if the tank wont handle high pressure (3000psi or better) air or nitrogen (not oxygen), then it wouldn't work. Just be carefull what you get it filled with, some gasses like Oxygen will not work in an airgun application and will either get you killed, or at the very least destroy your gun.