Quoted:
If it isn't a Mark 2 or 4, then it won't have the target turrets. You would probably need a coin or a screw driver to adjust the height and windage. $289 sounds very cheap for a Leupold. If it is a Mark 2 or Mark 4 for that price, I would think it was a fake.
If you don't know anything about the topic don't share your opinion.
The Leupold Mark AR is a great scope. It comes Windage Turret and a "Bullet Drop Compensating" Elevation Turret for 55gr .233 Trajectory, they do sell separate turrets for different .223 loads. I have a 3x9 Mill mounted on a 24" Bull and it is everything that I expected, that is because it is great and that is what all the reviews said when I was contemplating buying one.
Pros:
Very Clear
Turrets (Windage is 1/4 MOA per click and Elevation has Distance and Mills listed) + audible clicks
Value
Cons
No Parallax
No Fixed power for Mill-dot Reticle
Its a great scope but If you want a $300 uber tactical long distance scope get Super Sniper. In the end it is a well priced watered down Mark 2.