Great scope for the ar15 platform - Nikon P-TACTICAL Rifle Scope 3-9X40

I like this scope better then my Nikon Black Force scope. The Mil retinal is easy to use for range determination, the numbers are easy to see, the glass is clear and distortion free, so there is not much not to love. You just have to remember to switch to highest setting since 2nd focal plane when range estimating so a switch view throw lever may be a handy accessory