As good as other scope that are twice the price! - Nikon M-223 4-16x42mm Rifle Scope - Long Range Waterproof Hunting Scope

I've had this scope for about 2 years, unfortunately I didn't buy it from optics planet though. I have this mounted to my sig516 and it works flawlessly. the glass is so clear I leave my spotting scope home and use this to spot my 308 and friends shots. the adjustable parallax is spot on. at 100 yards i'm able to do 1" groups consistently and I've shot out to 500 yards without a problem, especially when using the Nikon "spot on" app. sure it's kind of like cheating but it's a great way to get a cold bore firing solution rather quickly and without breaking out the calculator and ballistic charts. the drop compensator marks have hold overs set up perfectly as well. I find no need to bother upgrading this as it really is great as it is, especially for an AR15. I would highly recommend buying this scope.