Remanufactured are probably worth another look for your system. They are indeed different than a restored shotgun which tends to use the original bits. As I understand the process from what Ken Duglan of Atkin, Grant & Lang as well as others such as Mike Yardley have described, the end result is essentially a sound gun with new parts as needed. The entire gun is usually redone including hardening the original action. But, if a part of the shotgun does not meet standards for modern shooting, it is replaced. I think one article had owners trading in their original guns as part of obtaining newly redone ones. Yardley included remanufactured Grants in his article on best guns for The Field.
