I'm between the Aimpoint PRO, and the Trijicon RMR dual illuminated. I like the Aimpoint pro, and it's battery life. I like the Trijicon because of no batteries, but I'm not sure about it's size. Do any of you have any experience with either optic?
I recently purchased the PRO to go on my Colt and so far it has been great. It comes assembled with the mount which allows co-witnessing. It was easy to attach and only took a few minutes to zero in. It appears to hold zero fine and seems fairly rugged, but then again I am just a recreational shooter.
Tritium has a half-life of about 10 years, IIRC, and is much harder to replace than batteries. I think the Aimpoint's batteries would only need to be replaced a couple of times in 10 years...