Quote Originally Posted by Captlink View Post
It was a suggestion for the best way.Many times a receiver is threaded with a tap at the factory and is not true.No matter how you do it the barrel should be checked for head-space after barrel installation.Find a general machine shop if you go with a tap it's a minor job and if the guy is nice he may do it for beer money.
Setting up to "clean" ID threads with a single point bit in a lathe would be a nightmare seems to me.