I don't have a clue about accurizing or gunsmithing. All I know is that for moving parts, you have to have a sacrificial part. That is the gas ring. It is the cheap easy repalcable part instead of replacing bolt, or carrier. In this case, it will require a rewelding and machining to get it back to that .001. It isn't a matter if it will wear, it is a matter of when. Obviously, if you do not mind building it back up and machining it down every few thousand rounds, no big deal. The other part is the material you are using. If you are not going to have scarificial rings... you still need sacrificial metal. You have to replace the rings with a metal softer than the bolt carrier. You WANT the bolt piston to wear because that is the easiest to repair. Last... the rings also catch and keep oil. So the action will stay lubricated longer. With it being solid, all it does is wipe a clean area, and leave the distance unlubricated. All that does is accelerate wear. It's something you can accept because you can repair it.