I have a stainless version, and I'm in the process of breaking it in, so this is not a final conclusion. Please keep that in mind when you consider my opinion.
In it's first outing, today in fact, I had nary a bobble or malfunction using FMJ ammunition. The Colt magazines, which I was expecting to be "Junk City" performed as my Wilson's do, 100%. Next time I go out I'll put more rounds through it before I determine it acceptable for carry. My usual procedure is 500 rounds of FMJ, with intermittant cleanings, and then a clean and lubricated gun for the final 200 rounds with my carry ammunition.
I was pleasantly suprised that it came with a G.I. Guide Rod. I was under the impression that it would have a FLGR that I was ready to yank out and replace. The Finish is good to very good for a production gun. I like the fact that Colt seemed to really pay attention to the ergonomics of the Trigger Guard. It seems they have squared the top portion of the Trigger Guard to enable a light to sit close to your finger. It's not much, and it certainly isn't a squared Trigger Guard, but every millimeter helps in this case.
I didn't run any hollowpoints through it, yet. I'm taking my time and breaking it in slowly, getting used to the new gun. My only complaint is that the Thumb Safety should feel a little more positive. That's a subjective thing, but we like what we like.
The gun is fun to shoot, and the undercut Trigger Guard is also an ergonomic plus that I find lacking on all but the custom or semi-custom guns. The Sights are Novak white dots. I'm not a fan of white dots, but they do work, and can be easily changed. The Trigger is smooth, with no over travel that I can detect. It also has a very positive feeling reset, which I like.
My choices were the Colt Rail Gun and the Springfield MC Operator. Not liking the ILS on the Springfield, although an easy fix, and having had five or six Springfields in the past, I opted to put a new pony in the stable for a change. I'm glad, so far, that I did.
As I continue to break this gun in I will update, but I'm not in a big hurry, so it may take some time. Take care and stay safe.