These are the same front sight blanks used by many of the top custom shops. Just machine the blade to height and profile for your custom project!
For Novak front dovetail cut
Front Sight Blank - Wide Novak Dovetail
Wide tenon, .250" blade
Ted Yost Gold Line Front Sight Blank
Ted Yost GoldLine front sight blank with extra-wide dovetail
Ted Yost GoldLine Front Sight Blank