Since I recently bought my 2007 S&W model 41, I've been trying to find out as much as I can about the model 41 pistols that are being made at the Houlton, ME plant. Such as, what year did Smith & Wesson move the production of the 41 to that location. Also, what modifications and changes have been made to them since the move was made? I've read something about a rear sight change made from Millett to their Bo-mar type sight? Are there certain years of these later pistols considered to be better than others? Like I said, I'm just trying to find out as much information as I can. Thanks in advance for any replies.