The guys at WLM are very gun smart. I believe they will give you an honest opinion, based on removing a couple of screws from appropriate positions and thoroughly examining them for traces of salt wood problems, if you simply ask them to do so. They will also quite likely state to you if the serial number falls within the known range of problem guns. The are honest and reputable dealers, based on my buying three guns from them over several years. They have been around for some time, and have a good reputation to protect. They know how to do so.