Had mine over 3 years now. - NC Star 3-9x42mm Rubber Armored Mark III Tactical Rifle Scope

Purchased from Optics Planet several years ago and eventually mounted mine on an Adams Arms piston 5.56, very happy with it overall. It has held together, clear, bright, accurate and holds zero and keeps chugging along. Nice scope for the price. Nice looking as well.
When I first purchased it I noticed it was a bit finicky about the picatinney it was mounted on. Initially I was thinking of using it on a Chiappas made .22 upper but it would not tighten down and stay in place, seemed to wander after a few dozen shots. It stabilized on the Adams Arms and has been there ever since. Smallest of cant in the scope was detected which is a result in the way the mount clamps the pic rail, that could also be why it is finicky with the pics, a design flaw. Shimmed it to correct. Ultimately a minor annoyance on a lever mounted scope.
Biggest negative is the flimsy flip-up caps. The rear one broke off on the first outing with it. A little epoxy remedied that (actually a bit stronger now) but I often remove it when out in the field, especially if letting another shooter use it.
I would not hesitate to purchase another but I hope they would have corrected the minor deficiencies since my original purchase years ago. I would easily give it a 5 star if that were so.