It has been a while sense I looked over the Colts and they may have changed but at one time they used different sized trigger pins and the upper and lower pins where also a different size (larger). This is not a problem unless you decide to swap out parts later down the road. As long as you know this up front you should have no problems with the firearm.
Have a good one!
Plan for the worst, Hope for the best and if you land on your feet running life is good!!!
With the level of night vision and adding supression, you may want to look at the Baer 6.5 Grendel under 1/2 MOA @ 500 yards.
Now THAT I would pay to see!
Guns Have Only Two Enemies-Rust and Politicians "The United States Constitution (c) 1791 - All Rights Reserved" If Guns Kill, Do Pencils Mis-spell Words? Pain is Weakness Leaving the Body - USMC "Qui desiderat pacem, praeparet bellum"