U.S. Army M40A1 Field Protective Mask

The U.S. Army M40 series was developed to replace the M17A2 for the Army and Marines.  The M40A1 shown here is equipped with lens outserts and C2 filter.  This example was made by ILC Dover in 1992.

 

Similar masks in my collection:  U.S. Army M40A2, U.S. Army M42A1, U.S. Air Force MCU-2/P

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Size stamp on forehead "US M"

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Manufacturer and date stamps on cheek "92 ILD 2J02" "M01C02"

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Manufacturer and lot stamp on head strap "ILD92H014-458"

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Manufacturer and date stamps on exhale valve cover "91 ILD 0428" "M01 C02"

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Stamps on exhale valve "M1 C18" "ILD 91810615"

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Size stamp on nose cup "M"

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Manufacturer and date stamps on nose cup "92 ILD 2J03" "M01C01"

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Stamps on intake valve "C5" "M2"

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Stamps on intake valve "C10" "M2"