Tippmann all metal 20 oz CO2 paintball air tank is ASTM certified and is shipped empty so visit your local paintball field to be filled. Tank features a pure energy repeater valve and burst disc for safety. The Tippmann CO2 paintball tank has a consistent recharge rate that provides optimal shooting consistency that provides up to 800-1000 shots per fill depending on your style of play and weather conditions. Tank can be used with various CO2 powered airgun with the proper adapter, see airgun manufacture sites for specific information. Do not forget Paintballs!