I was wondering if you good folks could recommend a good optic for the Ruger MK II (KMK 512). I want to ditch the iron sites and have a day / night sight. I'm not sure if I want a red dot or some kind of reflex. The reticle or dot should have good contrast in all lighting conditions if possible.

Thanks.

I like to shop Optics Planet. Recommendations as a link to the optic there would be really nice.