When I first started reading some of the responses, I thought I was in the wrong forum when folks started talking about sights for "combat weapons and real world use"
Then I read about Eotech being mentioned, then I was convinced I was in the wrong forum. Had to click back and found, yeah I was in the 22 lr forum.
Anyways?
If you are looking for a dot sight, you already know your choices.
Ive tried a few of them and like the heads up display type like this one.
TRUGLO Reflex Red Dot Sight Red Green 4-Pattern Reticle (15 MOA Peep
They appear to be durable, Ive got one that has about 2500 rounds thru it, another about 1000. Still hold zero, mount well and are lot more inexpensive then this site has them.There are many different company's buying this sight from China and putting their own name on them, but they are all about the same.I bought my last one from Amazon, cost me $28 and that included shipping.
This one included the green dot that is much more visible then the red in bright sunlight.
The tube type, looks like you are looking thru a tube. Helps you focus on your target. The heads up type gives you a larger field of view, to see more targets. Your choice.
Just remember, this IS just a 22lr. It does not have a lot of recoil that will kill a cheap dot.
Hope this helps.