Welcome to TFL.
I would recommend looking at Kimber's website. Also look at places like Brownell's and Midway.
There is such a large selection of sights that would probably fit that pistol, it will make your head spin.
The Meprolight sights are the ones that come from Kimber I think. They are on my TLE.
They are nice and bright, and seem to be pretty rugged. No complaints.