The M.17 and 17M designation can be used for both Austrian made GM15 masks and German-made GM15 masks as both were used alongside each other. The production started in Austria around 1916 but the factory is unknown. The Austrian-made ones had later variants which could protect better against Hydrogen cyanide, the letters were framed on those. First, the mask was used with German-made 11-C-11 filter and later with Austrian-made N-D, S-N-D and S-N-S filters which were the same as the 11-C-11. The filter comes in a light grey painted cylindrical canister. marking and has different updated eyepieces, this later variant uses the same shape of facepiece as the GM17. stamps and GM15-styled eyepieces and one with the impressed metal stamp K.u.K. The harness is 6 pointed and not adjustable, but the straps are rubberized. This causes that the user has to blow out the air hard. The valve is in a metal house, the intake is the exhale valve too.
Due to lack of Tissot-tube system and antifog inserts, the cheeks were designed bigger so the user could wipe off the fog with them but these "wiping wrinkles" are much smaller than on the GM15. The celluloid eyepieces are in metal assemblies. The facepiece is made of rubber-coated pale grey colored canvas. The M.17 or 17M, depending on the language is the direct Austro-Hungarian copy of the GM15, but the same designation can be used for the imported GM15 masks as well. It was called as Stoffmaske (cloth mask), Gummimaske (Rubber mask) or Rahmenmaske (Frame mask). Most of these masks were used in action during the gas attacks on the Italian front at the battlefields of Isonzo and Doberdo. stamps on the left side of the facepiece and on the valve and the size number are under the manufacturing date. used GM15 masks differed from the GM15 were the K. K., in Hungarian: Császári és Kiályi Hadsereg) to complete the protection of the soldiers beside of the rebreathers and M.15/15M masks. Juni 1916) by the Austro-Hungarian empire the masks were bought from Germany and were issued to the army (in Austrian: Kaiserlich und Königlich Landwehr, shortened version: K. Prior to the Monte San Michele gas attack (29. Kaiserlich und Königlich Armee (Austro-Hungarian Royal Army) The US Navy Gas Mask, Mark I (Mouth Canister Type) mask is the direct copy of the mask. The first masks were made from the coverage of a downed French airship called Alsace.
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