To spin off of SnWnMe's thread, does anyone know the actual date the lock was added? I've been looking around for it, and was checking The Standard Catalog of Smith & Wesson hoping for an answer. The book only goes up to 2001 and the last thing listed in their chronological history is S&W being purchased in 2001. Nothing about the lock in there that I could see, not even in any of the pictures. It must be recorded somewhere!