Another option would be to call S&W. One of the 460 or 500 Magnum models featured a Red Ramp front sight on the DX base featured on these models. So, that sight has been made by S&W, it just never made it into the catalog. Sometimes you can connect with a Customer Service rep who will do the digging required to find the part number for items like this and once you have that part number it's then simply a matter of ordering it by phone. However, that only works if they have some of that particular item listed as being in stock in the warehouse.