A periscope device specifically adapted to fit in the breach of a firearm. In accordance with a preferred embodiment, the method of the instant invention is initiated when a customer makes an initial product selection. The damping effect of the damper is variable. Methods for conducting such testing and for operating such systems are within the scope of the present disclosure. The processor operates to execute the BIOS code when the switch is in the first state and to execute the virtualization manager code when the switch is in the second state.