An automatic weapon system that closely controls the operation of a weapon, such as a cam rotor gun. A mesh with a plurality of openings covers the air outlet. Disclosed is an electromagnetic wave shielding material possessing a support and provided thereon, a conductive metal layer, wherein the conductive metal layer satisfies at least one of the following conditions; a void ratio of the conductive metal layer is 0. The dynamically generated text is broken down into string template pages. The pad at the opposing end includes a biasing means for further anchoring the bar within the frame. This novel sensing element shows excellent response characteristics in solutions and has an extremely long lifetime.