Quarantine Coloring Book
The U.S. Army M40 series was developed to replace the M17A2 for the Army and Marines. The M40A2 shown here is equipped with second skin and C2A1 filter. This example was made by ILC Dover in 2006.
Similar masks in my collection: U.S. Army M40A1, U.S. Army M42A1, U.S. Air Force MCU-2/P