Unless you really know the process, I'd suggest not just running a tap in the receiver. Clay Spencer ( (434) 293-6836 (voice/FAX) Email: clayspencer@ntelos.net ) has developed a great method for restoring damaged action threads as has Gerg Tannel.I just machined the barrel inside the reciever until it came out. There only a few places that were bad. I bet i can run a tap in to clean it up.