The 'instruction manual' for the OM Bearcat states and I quote, "Remove the screw which fastens the trigger guard to the cylinder frame. In separating the grip frame from the cylinder frame take care to prevent loss of the pawl spring and plunger. These parts are located in a hole drilled from the rear face of the cylinder frame, adjacent to the upper left grip screw hole." There is NO upper left grip screw hole on any Bearcats I have.