The 442 Pro Moon Clip
One version of a 640 that came with tritium pinned front sight.
Not Sure past that.
What is the deal about a Warranty???
I have owned no telling how many S&W revolvers over the last 40 years, and I have never had a problem where I needed to send one back.
I would a lot rather find one I can get my hands on, and check out, than order a new one sight unseen that I have to take.
Bob