U.S. Army MIAI Training Gas Mask

The U.S. Army MIAI Training Gas Mask used a molded rubber facepiece with blue/green plastic parts, MV type exhale valve, and its filter mounted directly to the chin.  As the Army stopped using Roman numerals, the nonclementure of this mask was later changed to M2A1.  The first example was made by Firestone in 1941, and the second example was made by Acushnet in 1941.

PATENT

Rubber stamp
Rubber stamp

Universal size

Rubber stamp
Rubber stamp

Manufacturer and date stamp

Rubber stamp
Rubber stamp

Date and lot stamp on reverse side of exhale valve

Stamp
Stamp

Lot number stamped on head harness

Carrier
Carrier

Close-up of bag for Training Gas Mask MIAI