I put them in my MK ll 512 and my MK ll comp target 678 years ago. All the difference. I know a few more people who have done it and they are quite pleased also.
I guess I am a nerd. I enjoy deep cleaning my MKll. The only failure to feed problems have ended up being dirty mags, so I occasionally disassemble them and give them a good cleaning too.
I was wondering about aperture sights myself. I'm 76 and the iron sights are tougher to use every year. Guess it's time for optics. I like venison, but sure don't want to lose a wounded animal in the woods.
I've taken two whitetails here in Maine with my '72 three screw Blackhawk conv. .45Colt with 7 1/2' barrel. Winchester Silvertip 225gr. hp.
35 - 40 yards.