I had two of these, and they all failed. 2000 + rounds and dot turned to like 10 moa (took 3 months to repair, what a joke turn around time) and then the repaired one only last 1500 + rounds and then the connection issue, and a brand new one only last 400 + rounds.
A friend send the below image to me and I currently have AF model which is causing reliability issues. All the current model connection is at 3,6,9,12 clock position where the new one is 1,4,7,11 position.
Below is what happen to my last one (Left is a brand new one, right is defective). It was just turning on and off.