Patent ID: 8286620

Claim:
A method of firing a projectile using an air compressor, comprising: connecting an apparatus to a fluid-cartridge fired pneumatic gun selected from the group consisting of a bb gun, a pellet gun, a paintball gun, a potato gun, a water gun, and a ball gun, the apparatus taking the place of the fluid cartridge, the apparatus comprising: a tank for the pneumatic gun comprising a fluid outlet; and an adapter, comprising: a first end attached to the tank; a second end comprising a fitting, wherein the fitting is capable of receiving a fluid hose; and a bore extending from the first end to the second end, connecting a first end of the fluid hose to the fitting and a second end of the fluid hose to an air compressor, wherein when the fluid hose is attached to the fitting and a trigger is depressed, compressed air from the fluid hose travels from the second end of the fitting, through the bore to the first end of the fitting, and further into the tank, and out of the tank and into the gun through the fluid outlet.