Holosun reflex green dot - Holosun HS510C 1x0.91-1.2in Open Reflex Red Dot Sight

My first impression is that this optic is extremely well built. I love the shake awake (motion acitvated) feature. But it also has the maual feature as well. Easy to switch from one to the other. Many different brightness levels and whats nice is it remembers what brightness level you have it set to when you next turn it on. For shake awake mode there is a solar panel with battery backup. I love that as well. You can set it between three different time lengths for it to stay awake. The glass is crystal clear with a nice big viewing window. Now to the cons...I have not been able to get the battery tray to come out. Im afraid to break it by prying on it. It does come with an extra one which makes it seem to me breaking it might be an issue. The reticle itself is bright but at first glance it seems to be blurry. Upon fiurther inspection i dont believe its blurry but rather more like multiple circles. Almost as if its a 3 dimesional circle you're viewing from a little to the side. At first i thought maybe its bc there was a film covering the glass that i needed to peal off but that isnt it. Or at least i can't find the film to peal it up. I don't know if maybe its my eyes but I've let multiple people look through it and they all see the same thing. Once you pull the magnifier up in front of it the multiple circles disappear into one crisp circle and dot.