US Army M17-A1 Gasmasker

The M-17 was issued to troops in the Vietnam War, and was standard issue for the U.S. Military.

Eight years after the introduction of the ABC-M17, the US Army updated the mask design. In 1966, the U.S. Army standardized the E13R13 as the M17A1 protective mask, officially dropping the ABC prefix from the name of the mask. The new mask came new features; the addition of the drinking system and the addition of the resuscitation system.