Description
This is an eye glasses metal frame insert for the U.S. Military M17 Gas Mask. The metal wire frame is resistant to rust and corrosion..Military ophthalmic laboratories fabricated these spectacle inserts There were two styles of optical inserts for the protective mask which were made available for users requiring visual correction. The M17 optical insert (6540-01-060-0611) sold here, which has a wire frame, is considered the safer of the two and is more easily fitted into the mask. The M17 gas mask optical frame insert has 44mm by 35mm eyewires, 30mm bridge, and integral split mounting rings. The prong-type optical insert (6540Â00Â935Â6573) was also available but less desirable. Unissued/Unused surplus - optical insert for the M17 gas mask. NSN 6540-01-060-0611
Features