REFILLABLE HK Army Compressed Air HPA Airsoft and Paintball Tank with Low pressure regulator! Compatible with all standard airsoft regulators and paintball gun markers. Enhanced accuracy, more consistent velocity, and higher performance in all weather conditions over CO2! All Compressed Air HPA Paintball Tanks are Shipped EMPTY and must be filled prior to use. Most Popular Compressed Air Paintball Tank in the Industry! The perfect tank for any standard Paintball marker. Safe and Easy to USe. High Quality Aluminum Compressed Air Tank with Flat bottom for Upright Storage or On Tables at the Field! KNOW WHEN YOU'RE LOW - PRESSURE GUAGE - regulator has excellent flow and efficiency | Low Pressure - 250-300 psi Pressure Output - DOT / TC Safety Certified 5 YEAR HYDRO RE-TEST CYCLE - Date stamped on tank is the date the tank was manufactured, NOT an expiration date. Tanks are good for 5 years after the stamped date, at which point, the tank will need to be re-hydrotested. All Compressed Air HPA tanks are shipped EMPTY to comply with Department of Transportation laws. Tanks Must Be Filled Prior to Use. | Designed w/ Safety as a top Priority!