I know this is a "wanted" and may not apply to this area but only gunsmiths would probably have the answer. I am presuming that I frame and J frame extractor (return) springs are the same but every time you think you know for sure you end up being wrong. Every one I look at has been modified or replaced. All the parts sources so far do not have any. My lot of general spring stock does not have the correct dimension to fit one. I sent a message to Wolff as maybe they have made them in the past. That being the case, does anyone know if inn fact they are the same and does anyone have an original unaltered I can buy. Thanks