Check the listing for details. USGI Gas Mask Dynamic Microphone - New. Condition: New. Listed at 74.20 USD. Originally used to transform the M40 series mask into the M42, crewmans mask (with the addition of the 40mm NATO hose assembly as well).This mic can be used with the MCU or Millennium masks as well if they do not already have the front two prong mic hook up on the front voicemitter.These units are non-tested military surplus. Styled Text ****************************************** Keep more money in your pocket by saving on shipping! Order multiple items in one (1) checkout cart and bundle your shipping costs! ****************************************** Important Notice for International Buyers: Please be aware that import duties, taxes, and customs charges are not included in the item price or shipping cost. These additional charges are the buyer's responsibility.