I seem to remember a list formulated by a member who has passed on, a very good friend of mine, Frank Manders, which went from the "K" date thru the byf's or in a nutshell, all the Mauser factory variations? I don't know if this list is still available, but it would cover a good size chunk of the total variation list should there ever be one?.... I miss Frank, best to all, til....lat'r....GT