I've had this scope four years. Many many rounds down range.  I've never had a problem with it holding zero. At the end of hunting season.  After being beaten around, in and out of the truck.  I can still put a bullet in the bottom of a beer can at 200 yds {where I shoot that's the greatest distance}. It's started out on my Savage .22lr.  Then moved to my AR.  It has been virtually perfect.  I chose it because I didn't have a lot of money and I have poor vision.  It was the least expensive, with the greatest range of zoom.  I'm sure 'Scope Snobs' will find problems with it.  For me, It's been very dependable.  A great scope.