People are always asking what the most stable mounting solution for LPVO or large-frame prism scopes on the AK platform is. Without a doubt the answer is the Zenitco B-33. The unit is held solidly in place by four separate tension/ connection points and will return to zero each time you open the dust cover to access the inside of the rifle. I am aware that they are hard to come by, but given the choice, I recommend taking the time to find one.