I had one mounted on my M14, after the first 60 rounds the illumination dial came loose. I contacted 1337 and sent it back for refund, No problem. I will add that I found the glass to be clear and the POI to be consistant with adjustment (in the 60 rounds I fired). I dont know if I got a lemon or what, but I didnt want to take my chances with reliability so I got a leupold. I know that lots of guys have them and are happy with them for the money.
Jarett