It's not an eotech, but you're not paying for that are you? - OpticsPlanet Exclusive Sightmark Ultra Shot R-Spec Reflex Sight 1x33 mm

I was skeptical about buying this sight as a few people have mentioned quality issues. I decided it was worth the risk and I'm glad I did! Build quality seems pretty sturdy, no visible plastic in any component, buttons and switches seem firm, glass is nice and clear.

The reticle is clear and crisp, with a little bit of halo effect if you turn the brightness too high for the level of ambient light but that's to be expected since this isn't a holographic. It only took me 30 rounds or so to get it zeroed, and after another 150 rounds down range, at 75yds I had no problem keeping it on target. The brightness button is maybe my only gripe, because it cycles from brightest to darkest, and since it isn't a knob it's not entirely fast or easy to see where that adjustment is at the moment until you're looking down the sight. Not a big deal for me as I just have it set for lower light and if I need it brighter it's just a few presses away, but I could see that being a drawback in some scenarios.

Overall, seems like a quality piece for the money you're spending!