What about on an existing gun, won't they have to completely disassemble it to harden it and then reassemble?
yes.
Seems to me that would cost considerably more than letting it ride until it warps and if needed buy a new receiver, have it heat treated and then pay for a reassemble.
my reply was directed at kythri, who is contemplating new construction. up top i advised wardawg to just pein or weld his existing rifle.
Wasn't Troy pretty adamant that heat treating the entire receiver was not necessary and could damage it by making it too brittle?
yes, he was. i disagree.
if the communists have done a successful job of heat treating their stamped receivers since 1959, we should be able to do so, also.
this is NOT rocket science.
skipping the full heat treat yields a less exspensive product that will sell, initially, well to a wider segment of the market. doing the job correctly costs more and will limit your market by forcing a higher price point.
i've got kits stashed back for the day the americans tool up and decide to manufacture a proper receiver (such as coonan is attempting with the fal and dsa has alread accomplished).
no one is currently buying a williams fal receiver. why? cost came before correctness.