Can the Soviet GP-5 Gas Mask be used in airsoft? This mask was produced from 1962 to 1990 in the Soviet Union and allied countries though it is said that the filter contains asbestos. Callsign: Walker tries out one to find out if is good to use for airsoft... "This particular piece of biological warfare has brought my attention to test for myself. Indeed it is a gas mask, but will it hold out in a hardened airsoft battle?"