Named WWII USAAF M5 Flak helmet. This was used by bomber crews to protect themselves against flak explosions while in the air. The item "WWII USAAF Army Air Force M5 Flak helmet Named" is in sale since Thursday, February 27, 2020. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\United States\Hats & Helmets".The seller is "wwii_collector_44" and is located in Medina, Ohio. This item can be shipped worldwide.