Rossi front sights, anyone?

I've had my dealer here at home try to look up a new front sight and no luck.I've wrote Rossi.But since Braztech took over, they say they don't have anything that will fit.Anybody know anyone that has one for sale or know where to get one?Maybe a part number or a company.I was thinking that one off a smith would fit but don't know which one. This is for a Rossi 971 with a 6" tube. And also has anyone mounted a red dot or scope and had any luck.