As you can seen not only is it enormous but it's obesity completely destroyed the rifles balance and pointability. I hated the thing on my gun and within a week replaced it with a 2x7x33 leupold
What do you expect from a 4-16x40AO? That's not a Chinese optics problem. It's a big, high power scope problem.
FWIW, I have a couple of 4-16x Chinese scopes and a 2-7x33 Leupold as well. They're just totally different animals. That big Chinese scope works great on a bench rested rimfire, but it's not what I'd want on a lightweight hunting rifle.