To be a tiny bit fair to S&W, somehow I don't think that warped rear sights come up all that often...otherwise you'd think they'd have a gauge for it? Or maybe I'm just being really optimistic. I suppose it's also possible that whatever finish they put on the gun warped it a bit. The spec doc says the finish is "glassbead black" but I don't know if that means they beadblasted it then blued it, or if that's some trendy new DLC coloring, or what..