The invention is directed toward a butt stock assembly for a firearm. The first set of apertures receives the nasal pillows, and the second set of apertures is aligned with the nasal pillows when the liner is in a folded configuration. Within the guard ring 310 is an implanted n+ APD layer 312 upon which is deposited an epitaxial p+ APD layer 314, these layers forming the APD 300. If the comparison does not result in the request for torque exceeding a limitation, a first coordinated torque request is determined as the request for torque and a null torque is determined as a second coordinated torque request. In an alternate embodiment the first charge pump may be combined with one or more voltage doubler stages to produce even higher output voltages.