Thanks for the info. I stumbled upon the Millett sights while surfing the net. I bought a set plus a white front sight from Brownell's. My Trooper MK III is my best shooter and should be even better now /forums/images/graemlins/grin.gif
Colt makes a replacement rear sight blade with a white outline.
It's a simple matter to install it.
NOTE: All Colt pistols with the standard Accro rear sight used the same sight blade. You don't have to have one specifically listed as for a Trooper Mark III.
Just make sure to specify you need a white outline version.