For those who are wondering, it's a Colt Combat Commander, a Series 70 gun with the lightened slide. The hammer has been replaced with a Nowlin Speed Demon, and the trigger is a McCormick. Thumb safety is a single sided Ed Brown tactical, and the mainspring housing is an aluminum SW1911 checkered unit. The rear sight is likely a Safariland, while the front is a serrated ramp with an orange insert. The grips are cocobolo from Fusion. The pistol has been melted by Clark's and hard chromed. All else is bone stock Colt. If anything, such as the slide stop looks custom, it's because Clark Custom melted it.
Thanks, Doc, for letting me shoot a bit at your place.