Original U.S. Vietnam War INERT Practice M31 HEAT Anti-Armor Rifle Grenade Trainer With Original Container and Markings - 66mm MG 15 First appearing in 1939

First appearing in 1939

The narrow (½” wide) leather chinstrap measures 11” long and retains its two original leather adjusters and its brass ‘slide’

The marking indicates that the helmet was produced by Miris Steel Co Ltd

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This change was primarily made due to the rapid advances in aircraft (and aircraft bombing technology) that took place between 1920 and 1939

Original U.S. Vietnam War INERT Practice M31 HEAT Anti-Armor Rifle Grenade Trainer With Original Container and Markings - 66mm MG 15 First appearing in 1939Original Item: Only One Available. Totally inert and demilitarized according to BATF guidelines with hollow body and deactivated propulsive charge. This rifle grenade round cannot be converted to an explosive device, it is just a trainer. Not Available For Export The M31 HEAT is a fin stabilized anti tank rifle grenade designed in the late 1950s to replace the Belgian ENERGA rifle grenade which was adopted by the US Army and US Marines as an emergency