Goblin Air Sports Paintball Player Pistol Set, Black Includes Goblin Solo Holster GOBLIN SOLO is a single-shot back up pistol that uses a rechargeable Air Cartridge The GOBLIN Air Cartridge is recharged with an Air Adaptor included with the GOBLIN SOLO Set, and can take either CO2 or compressed air (HPA) When the SOLO is fired, the entire charge of air is used to launch the 6mm BB's Includes Spare O-Ring Kit