Searching around I found this page of a 1995 Colt catalog.
As I recall, Colt actually drilled a hole in the sloped surface of the front sight to install a luminous tube.
Around that time, the only way to install a night sight on a sight that was not removable was to cut a dovetail and install a block-like insert with a tube in it.
This looked pretty clunky with the cube shaped insert sticking up out of the sight blade.
Drilling the hole like Colt did it required some skilled machine work on that steeply sloped and narrow sight.
Now I want one! Nice find guys. Congrats
That police positive looks just like my MkV..did they make one exactly like it but without the "V" over the colt???
I have one with regular front sight. My understanding is that they came out the Custom Shop. Mine was ordered by a then retired member of the Reagan administration. Only a few were done in hard chrome. I thought that they all had the RD prefix serial, but the letter posted above proves this incorrect.
Last edited by WinstonWolfe; 02-15-2017 at 07:28 PM.