I finally managed to snag what has been one of my "Holy Grail" pistols. A S&W Performance Center model 646 in 40 S&W. Regardless of the amount of pistols rumored to have been produced in this version, Roy Jinks, Smith and Wesson Historian has stated unequivocally that ONLY 161 of the Performance Center guns were made between 2000 and 2003. It did NOT come with the case, but I can live with that.