I used the following sights from Midwayusa a couple of years ago and they are by far the best sights I ever had on a handgun. I use mine for hunting and the sights are unbelievable easy to see in the woods. I have shot hand gun for 40 years and wish I could have used this set up on my Colts that I had
325201
Williams Fire Sight Set Ruger GP100, Redhawk, Super Redhawk Fiber Optic Green
334505
Marble's Front Sight Ruger Super Redhawk 480 Ruger, Redhawk 44 Remington Magnum .390" Height Fiber Optic Green