One more clue to it's grade would be the barrel's markings from MF Very unlikely a grade 6 would have anything but 5 wreath (laurels really) stamped. Additionally, I can't remember seeing a Grade six that was extractor, like this gun. More typically they are ejectors at that level.

I tend to agree about the restock but it it has been done, it's a pretty plain piece of wood that got picked.

The world cries out for such: he is needed & needed badly- the man who can carry a message to Garcia