I see that they carry the white outline rear, but I don’t see anything for the red ramp front site. Is that something that was special ordered from Smith & Wesson or something that was cut in by an aftermarket gunsmith?
Changing the front sight on a S&W revolver is not a drop-in, easy DIY job. It is much easier to paint the Patridge front sight with a base coat of matte white, then top coat color of your choice.