Here are my samples of SKS's one is a Yugo 59/66 with pristine metal that still has some cosmoline in it. The other one is my Norinco with a folding stock with pristine metal as well.
This folder fits super tight and I think is a better brand than some others Ive seen and handled. Ive handled a few that really felt and looked cheap. This is the only stock I have for it too. Thanks for the comment.