Obsolete? Wow that makes me feel old. I just started to read this thread. I bought one of these before I left S&W. I never worked on these, they were made in Houlton Maine, so I think most of the parts were there and not in Springfield. I worked in outside repair just before I left and I only knew one guy at the time who would know enough about assembly and repair so I'm not sure they would have someone knowledgeable enough now. They are similar to the Model 61,