I too am curious. From what I've gathered it is
1) somewhat outdated,
2)"not true 1x low end" ( I think people get too caught up in the number),
3)the side illumination push button,
4)and exposed turrets.
None of those really bother me except the push button illumination. I like that's it's really light. But I haven't found too many reviews to go for it. It's actually on my short list for my "do all " rifle.