I have a 1903A3 built on a Santa-Fe receiver. I understand these were manufactured post-war, as a private venture; no problem since I got this one as a shooter, not for collection purposes. My question concerns the receiver: in researching this, I have seen some opinions that the heat-treatment is faulty, and could possibly even cause catastrophic failure, while others claim the quality is quite good. (This has nothing to do with the original military receivers, only this post WWII manufacturer.) I can't seem to pin down a reliable source. I just want to verify (assuming gunsmith checks on the entire rifle give it a green light) that the rifle is safe to fire. I've been beating my head against the wall trying to find the correct answer for some time - Does anyone have any actual fact on this? Thanks.