Designed for use with water, this backpack- mounted pneumatic cannon also adapts to fire a variety of liquid and solid ammunition. Gauges monitor the compressed air, which is contained in a 5 gallon central tank. The liquid ammunition tank holds 1.5 gallons and feeds the firing chamber through a series of solenoid valves. Charging is accomplished with a standard air compressor, while a detachable remote enables one-touch loading and firing. With a range of up to 100 yards, this is a toy to be reckoned with.