Dawson Precision serrated plain black front night sight
For Colts and other 1911 pistols with dovetail for front sight measuring .300" wide, .062" deep, 60 ° included angle.
Colt has used this dovetail configuration on some Gold Cups, some Gunsite Models, some Special Combat Government Models and others.
To order the correct front sight for your Colt, you have to measure the dovetail on the original sight as well as the distance from the centerline of the dovetail cut in the slide to the front of the slide. See pictures.
You can add a gold bead by adding this option: https://shop.harrisoncustom.com/113g-install-gold-bead-in-plain-black-dovetail-front-sight-2