I suspect most of the parts are contracted out, so Colt is using the same barrels, triggers, ejectors, springs, grips, sights, hammers, sears, etc, as anyone else. When I read about the number of people they have in house, they sure are not doing their own forging. I would think they get the frame and slide forgings from subcontractors and machine them inhouse and assemble the gun from components inhouse. About the same as everyone else.
There was a time when Colt did everything inhouse. So what you are paying for is the name and an assumption that the Quality Control is equal to, or better, than other brand names.
Go to your local gunstore, handle and compare a Colt to other brands. I did that in December. I wanted a 1911 in 9mm so I played with everyone's gun on the way to my selection to a Kimber Custom II. I handled a couple of 45 ACP Colts, the most expensive one was as tight as a Kimber. The cheapest one was about as loose as a cheaper off brand. Test the trigger pulls, the back end movement on the barrel, tightness around the barrel bushing, and see if the pistols rattle when you shake them. If you like the Colt in your hand, buy it.