I have been testing a Bushnell TRS-25. First saw one on a AR at my club. The owner was gushing on it and let me play with it. It were't bad. Don't have a lot of time spent with it yet but it seems to be worth it's price point. No real tracking to speak of. Mostly trial and error to zero. But once set, it seems to hold it OK. It is a micro red dot and will not run over a .22LR. No surprise it is hecho in Chine but what isn't these days. Ain't no Aimpoint but then, it hardly cost more than a brick of .22LRs these days.

Check out the reviews on Amazon.