There are a couple of guys in the Oklahoma City area offering cast kits for the Farrow. I bought one and you best know what you are doing. I have the lateh and mill but this project will wait for me to get more experience under my belt. They used to sell on eBay but since they don't allow 80% actions now you may have a hard time finding them, they sold some decappers and Farrow tools so search for that. They included a drawing. I have photos I can send you or someone else if they want to post them here.