Paintball marker action assembly

A paintball marker system operationally configured to fire a paint ball with pressurized gas from a pressurized gas source, the paintball marker system comprising:

• a) a frame having a bolt assembly housing region and a spool assembly housing region, the frame further having a actuating chamber surface defining in part an actuating chamber,
• b) a spool assembly comprising a piston having an actuating ram and a valve ram, the actuator ram having an actuating ram chamber surface which in part defines the actuating chamber, the valve ram positioned within a valve body and having a valve ram dump surface defining in part a dump chamber that is operatively arranged to be in communication with a high-pressure source, the actuating ram and the valve ram being connected to one another on the piston and both move substantially synchronously with respect to one another,
• c) a bolt assembly comprising a bolt member having a paintball receiving location, the bolt assembly having a gas passage to communicate with pressurized gas from the dump chamber,
• d) a firing system comprising a trigger switch having a trigger line in communication with the actuating chamber,
• e) whereas the spool assembly and the bolt assembly are operatively arranged to move in conjunction with one another where the paintball marker system has a loading orientation where the paintball receiving location is orientated to allow a paintball to be positioned thereby and the bolt assembly does not have gas pressure from the pressurized gas source when in the loading orientation, the valve ram dump surface having a pressure effective surface area which has pressure applied thereto by the pressure within the dump chamber which is higher than atmospheric pressure, and whereby a change of pressure in the actuating chamber by changing the pressure within the trigger line by the trigger switch biases the piston from a loading orientation to a firing orientation where the valve ram is disengaged from the valve body and pressure from within the dump chamber is in communication with the gas passage of the bolt assembly to accelerate, and
• f) the actuating ram has an actuating ram dump surface and where the actuating ram dump surface and the valve ram dump surface define in part a dump chamber and the actuating ram dump surface and the valve ram dump surface have pressure effective surface areas which both have pressure applied thereto by the pressure within the dump chamber which is higher than atmospheric pressure, and whereby a change of pressure in the actuating chamber biases the valve ram to disengage from the valve body and pressurized gas from within the dump chamber is in communication with the gas passage of the bolt assembly to accelerate the paint ball.