I've had mine for three years now, around a thousand rounds of .308 have been fired under it from thirty below to ninety above, it's fallen a couple times, been bumped a lot. The adjustments work, the clicks are inconsistent in feel and sound,have been since new. It's not as bright as my 4500 Bushnell, though just as clear, I have no truely high end optics to compare it to. Holds zero fine. Mostly it got me out shooting on sale I paid very little for it, if it fails I'll upgrade, if I come into discretionary funds or start shooting comps I'll upgrade, but for now it works.