For the price, an amazing optic! - ADE Advanced Optics RD3-012 Mini Reflex Green Dot Micro Sight

I will start by saying that this red dot sight will be reviewed by what you get for the price. Not everyone is able to or wants to drop $250-$600 on a red dot sight.

The build quality is amazing, I found that the buttons are intuitive and easy to use. Hold up to turn it on and adjust brightness and hold down the button for 3 seconds to turn it off. The green dot is also a very precise dot, not a smudge or deformed circle. The dot also gets bright and can be clearly visible outdoors. The sight holds zero and with the D1 mounting plate on the Glock sits fairly low. I like it so much I might go ahead and get an rmr cut to fit this specific sight. It holds zero and is accurate. Overall build quality is nice and feels solid and that it will last and take some abuse. The sight comes with the screw, battery, and other extras so you don't have to look around the house for tools. I would recommend getting some Loctite as it will lock your threads into place to secure both the plate and sight onto your gun. The only negative I would have is that the sight sits up a little bit, but this can be blamed more on the plate that the actual sight. The sight itself is not bulky and would be best used with a custom cut so it sits low. Overall, I am completely satisfied with the sight and for the price, can't be beaten.