Re: I think you have asked your question in the wrong place Marvin (LO
Marvin, I would think that any hardness question would be taken care of by the proofs on the right side of the cannon. There is where the Germans indicated the tests for hardness. I would have to look it up but one of the three to five proof marks in this area is for hardness of the reciever...not the frame. If the Germans were to mark for hardness on every part there would be many more proofs than there are already. As with many American weapons the only part specifically hardned was the reciever.Just Idle speculation...Jerry
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