What are you talking about?
If you don't know what you are talking about, don't answer the question. I'm looking for the name of the smith or smiths up here that service the Ruger old model revolvers at no charge to the customers as per their recall. Buying parts on ebay to convert an updated model back to an old model is not why the question was posted. READ the question - if you don't know how to interpret the question, you don't know how to answer the question. Sorry for the upturned collar on this, but two responses, and no useful answer between them is just a waste of bandwidth.