Back in about 1963 (I was 13) a friend of my Dad's, who knew I was interested in guns gave me a box of deactivated S&W M13 Air Force revolvers. There were probably 10 of them in the box. They had had been deactivated with an arc welder I believe. The friend had found these in a scrap yard in Anchorage while he searched for aircraft parts. I learned a lot about Smith and Wessons by tearing these apart and studying the workings. Unfortunately I have no memory of what happened to them. I wish I had hung onto a few as they are pretty rare to find now. Salt Flat