A firearm suppressor is provided. A machine downloads a policy object containing a reference to code governing verification of data. A front pad insert and a heel pad insert can also be utilized and the inflatable adjustable bladder assembly can also be removed. The shape andor material properties of the reaction chamber isare preferably selected in such a way that a reset effect is created after deformation such that the original shape can be restored by creating an absorption effect until the original volume is substantially re-created. The plating film according to the disclosure is formed with use of a solvent in which a metallic salt is dissolved and a compound having functionality is dissolved or colloidally dispersed, and the metal and the compound having the functionality are homogenously dispersed and joined. The AUV includes a body having a base and first and second sides, the body having a head part and a tail part; a propulsion system for guiding the AUV to a final target on the ocean bottom; jet pumps connected to corresponding nozzles on the first and second sides ; a control device connected to the jet pumps; and a seismic sensor configured to record seismic signals.