geostoria Posted December 22, 2019 Share Posted December 22, 2019 U.S. Military Pilot Oxygen Mask MBU 5/P. Vietnam era pilot oxygen mask. Sierra Quik-Don pilot flyers oxygen make for air force flight helmet. Average used and worn condition. The MBU-5/P was the U.S. Air Force standard issue oxygen mask from the 1960s through the 1980s. It also saw limited use by the U.S. Navy during the late 1970s. ref et 761285375 Link to comment Share on other sites More sharing options...
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