Methods and apparatus according to various aspects of the present invention comprise an on-off controller configured to control the flow of pressurized pneumatic fluid and to connect directly to a pneumatic device. In one embodiment, the on-off controller comprises a body having an inlet, at least one outlet, a vent, at least one connection bore, an activator positioned in the body, a position mechanism configured to move the activator in the body, a seal configured to sealably contact the activator and seal the vent, wherein the body may connect directly to a paintball marker.

 
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