Pitting inside the receiver should not have been from salt wood, maybe you mean along the side of the receiver. The salt wood pitting that I have seen was contact areas of the stock and the metal of the receiver and tangs.
Sounds like the dealer had already heavily discounted the price of the gun to reflect the problem of the salt wood. When ever you come across a bargain like this you need to look real close for the reason.
Personally I would have asked the buyer if the seller had shown him the problem before the sale. I am sure that you could have quietly done this without making a major fuss. If the seller is honest he will take no offense. If not you will get screwed by him on some other deal in the future. There are too many decent dealers and far too many decent guns to not do the right thing. Who knows what the buyer might have done if you told him before the sale. He might still have bought the gun and been just as happy because he got a bargain even with a few warts. Now years later you are wishing you had done differently or at least wondering if you should have. Life is too short to not be proud of your actions and deeds.
