Abstract: A training stun gun consisting of a main valve body and a base cylinder which are screwed together and have a cavity therein. A CO2 cartridge is located in the cavity. The lower end of the main valve body has a piercing element therein that faces the top of the CO2 cartridge . When the two bodies are screwed together to a certain extent, the piercing element will pierce the top of the CO2 cartridge and release high pressure fluid. A valve assembly controls the release of the high pressure fluid to a burst diaphragm cap on top of the main valve body. The cap will burst and release the high pressure with an explosion-like noise. No pyro-technique is involved.

Abstract: A removable air bleed assembly for use with between a paintball gun and an auxiliary system includes a pin having an elongated pin channel extending through a majority of the pin to bleed pressurized air from the paintball gun. An air conduit is coupled between and in fluid communication with the removable pin and an auxiliary assembly to facilitate passage of the pressurized air from the paintball gun to the auxiliary assembly. The removable pin can be manually removed from the paintball gun without the need for any tools. The auxiliary system can be at least one of an agitator system and an uploader system, as an example.