The Ultimate Sighting System (USS) Gen II gives you all the Benefits of a Mark III Tactical 3-9X magnified Scope with the Advantage of a Micro Red Dot Reflex Optic for close range targets. This Combo is comprised of a Mark III GEN II Tactical Scope with a Micro Dot Mount that mounts directly to the Ocular Lens Housing and a Red Micro Dot optic on top. This is the perfect platform for the New DDAB Micro Red Dot Reflex Sight (also included in the USS)100-500 yard Bullet Drop Compensator (BDC) calibrated for M193 55gr. FMJ Mil-Spec ammo.