BD, First let me tell you that I do some freelance work for Nikon just to get that out of the way. Second, I have put 1000's of rounds under all the M and P Series AR scopes without a glitch in any of them. I am a big fan of the BDC reticle scope's Nikon offer's since it allows you to dial in your accuracy with Spot On based on your ammo,cal and scope. Obviously the more accurate the data you enter the more accurate your shot's will be. If you're looking at a scope that goes to 12X or higher they are currently included in a Promo Nikon is doing. I don't do any sales so what you buy is up to you, I would just hate for you to miss out on saving $, we all like to do that! Check out Spot On if you haven't already, free to use and workson your android/apple portable device's. Drop me a note if you have any question's.