The Vintage M17 A2 GAS MASK Chemical Biological Respirator with BAG is a collectible piece of US military equipment. This gas mask, made in the United States, is designed to provide protection against chemical and biological agents. With its authentic military design and rugged construction, this gas mask is a sought-after item for collectors and enthusiasts of militaria. The inclusion of the protective bag adds to its practicality and makes it a valuable addition to any collection.