>>326451
The highest quality Primary Arms micro dot might work well for you. It's about 180 dollars has a 40/50k hour batter life.
Down sides being I don't think it can take as much beating as an Aimpoint and parallax shift within 33 yards.
I bought their cheapest version just too see if I liked red dots (fucking stupid, of course I would). I have had one die on me from heat, they replaced it no questions asked because it was still in warranty. The one I got as a replacement MIGHT be zero wondering, plan on confirming if that is true sometime soon.