Kahr K40. Some of the best CC guns made. Single stack, DOA trigger that is as good as any S&W i have ever shot, all stainless steel construction.
These are very accurate guns, I own a CW9 which is the same size, but in 9mm and a polymer frame. Mine is very accurate and the shape of the gun fits my hand pretty well. I did add a hogue over-grip and that made it feel even better. The only bad thing about the K40 is it weighs more than its polymer bothers. I would recommend the CW40, same gun but it has a polymer frame but it weighs around 16oz unloaded and the slide is less than an inch thick. The CW9 holds 7+1 and the CW40 6+1
That is as thin and as light as it gets without getting into cubic dollars. Kahr is MADE IN THE USA if it matters and mine has NEVER had a miss-feed or miss-fire. They are very good quality guns and anyone who has handled one can attest to this.
The CW40 will run in the mid $400s new and the K40 is a little more.
If for some reason you felt like you needed a 45. they have a CW45 and a K45 as well.
This is a better carry solution that any comparable 1911 style gun in this price range.