What is necessary to convert a modern conventional DA/SA revolver to DAO? I would like to change the hammer, instead of cutting off the spur. Where would I find the new hammer? Call S&W direct or aftermarket supplier? What internal lockwork would need to be changed, if any? Also, I had a hard time trying to search the forum for this conversion. Any help on how to correctly use the search engine in this forum would be greatly appreciated. Thanks in advance.