|The Czech M10M Gas Mask is the genuine article - an authentic piece of Czech military surplus equipment. Very similar to the U.S. military M17. Perfect for your military gear collection, soldier costume or even a reliable, inexpensive personal protection solution, we’ve got these effective and downright cool-looking masks for the public. In addition to the mask, you get an integrated drinking tube and canteen/water bottle adapter (fits some bottles not all). And if it’s good enough for soldiers in a warzone it’s got to be good enough to you, no matter what dangers come your way! Czech military originally developed the M10M to protect troops from nuclear, biological, chemical and radiation threats. The Czechoslovakian M10 is heavily inspired by the US M17, but has many clear differences. The exhale system is different, having a metal housing with the exhale pointing directly outwards. Instead of the M17 style exhale, where the valve is covered by rubber and forced out through the bottom of the housing. The filter openings are larger and threaded. The head harness varies as the M10 head harness is made of a thicker grey elastic fabric with a rubber head pad and large rubber pull tabs. The M17's outserts have been found to fit with M10, but are noticeably smaller, and the filters are not interchangeable between the masks. Due to the different inhale sizes, and cap attachments. The M10 mask was used by both Czechoslovakia and East Germany. And remains in use today by the Czech Republic.