Extra 20oz CO2 Tank

Any paintball shop, sporting goods store, or welding/gas supply store can fill a 20oz CO2 tank. Most charge $3–$5 per fill and complete it in minutes. If you’re doing a lot of refilling, it may be worth getting your own bulk CO2 cylinder and refill setup — that lets you refill on-site, cheaper and more conveniently. (How to fill a CO2 tank video →)

Yes — this is a standard 20oz CO2 tank. They can be purchased anywhere: local sporting goods stores, paintball shops, online. They’re all essentially the same.

A single 20oz CO2 tank pressurizes one full fuel tank of the X15 or XL18 — it’s a one-to-one ratio. Most owners keep a couple extra tanks on hand so they can run multiple sessions back-to-back without waiting for a refill.