It depends more on the height of your mount than the optic. I've done fine with a Nightforce 2.5-10, assorted 1-4 and 1-6 optics with normal Emod, Imod and Magpul STR stocks. Don't get a PRS for a 14.5 Afghan rifle. You'll be fine with the normal stock. I'd get a lower mount before I'd get a...