Original U.S. Cold War INERT M31 HEAT Anti-Armor Rifle Grenade Trainer - 66mm U.S. Equipment while the other has a

while the other has a more standard two bendable attachment tabs

in the hope that they really were better designed

Flat silvered buttons

Sweden succeeded in keeping its official neutrality status throughout the war

The liner itself shows only a bit of scuffing around the rim

Original U.S. Cold War INERT M31 HEAT Anti-Armor Rifle Grenade Trainer - 66mm U.S. Equipment while the other has aOriginal 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