Does anyone know a source for a Trijicon (or equivalent) front sight blade for the J-frame revolvers with the pinned front sight? Brownells doesn't sell them. S&W has the part but they will only sell it installed at the factory. This seems a little silly, since we're talking about the pinned version, not the older versions with the front sights that are part of the barrel and have to be drilled for the tritium insert...