Unused military surplus. $ 11 .07. Gas Mask Hose 40mm Russian. Gas Mask Hose 40mm - Standard Russian Soviet Army Military Gas Mask tube to be placed between filter and mask - 40mm screw thread Can be connected to most Soviet / Russian gas masks like GP-4, GP-5, GP-6, GP-7, GP-7V, GP-7VM, PMG, PMK, SHMS, PRWU and others.
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