Patent ID: 7712463

Claim:
A compressed gas gun comprising: a gun body comprising a rearward end and a forward end, the gun body including a breech for receiving projectiles; a bolt disposed within the gun body adjacent the forward end of the gun body, the bolt being slidable from a rearward position to a forward position for chambering a projectile within the breech; a hammer disposed within the gun body adjacent the rearward end of the gun body, the hammer comprising a forward end, the hammer being slidable from a rearward position to a forward position, the forward end of the hammer adapted to contact a valve pin when the hammer is in its forward position; a hammer spring disposed within the gun body and biasing the hammer toward the forward position; a compressed gas source in communication with a valve housing, the compressed gas source supplying compressed gas to a valve body, a valve body disposed within the valve housing, the valve body having an inlet port receiving compressed gas from the compressed gas source and having a rearward end and a forward end the valve body including an outlet port, the forward end including a gas balance reservoir in communication with a portion of the breech of the gas gun; a valve gas passage providing communication between the outlet port and the gas balance reservoir of the valve body; a valve poppet disposed within the valve body and including a sealing end and a sensing end adjacent to and positioned at least partially within the gas balance reservoir, the sensing end comprising a sensing face in communication with the outlet port and at least a portion of the breech, the valve poppet being slidable between a closed position and an open position; and a valve spring disposed within the valve body, the valve spring biasing the valve poppet toward the closed position, wherein the gas balance reservoir is not in communication with the compressed gas source when the valve poppet is in the closed position.