Hi, I posted this over on the S&W forum but I didn't get much help. I'm thinking i'll have better luck here. My brother has a S&W 457S and he's decided he likes evrything about the gun except for the three-dot sight system. He's old-school and prefers the older front blade/ white outline rear configuration. Are there after market sights he can try or is he stuck with the three-dots? Thanks in advanced for your help.