I'm liking it too. From what I can see, its a add-on picatinny rail with multiple levels to add on accessories.
My main like is the remote pressure switch. Turn it on when needed. I don't like lights that have to be on all the time. It has the potential to give away your position.
Turn it on when needed.
I have a red dot exactly like the one in the pic. Actually have two. One on my competition pistol, and the other on a new competition upper in .223 that I got over the weekend.
Dial it in , and the zero does not change in my experience.