4000 rounds so far and still great - TruGlo True-Brite Open Red-Dot Sight TG8380B

I use this on a 15-22 for competition in rimfire challenge and steel challenge competitions. It has served me well. The selectable reticle is handy. Being able to select between green or red is nice but I usually just use the red for it’s clarity against white plates. It has remained zeroed through about 4000 rounds so far. You do have to turn it on and off manually but this is no hindrance for a competition gun. I wasn’t expecting much at this price point but have been pleasantly surprised.