Scope Centerline height raised to AR15 11/2″ scope height and more room for low profile Rear BUIS. Blue and Green Color Illuminated reticle, with multiple brightness settings for each color. Improved: Lowered BDC Turret height, for lower mounting height for the Micro Dot Reflex Optic. Auto Locking Quick Release mount and a more compact QR Lever. 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 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. Quick Focus Eyepiece. Fully Multi Coated Lenses. Integrated Slant Cut Sun Shade. Black Anodized exterior finish. Includes lens covers and batteries. DDAB is a Red Micro Dot optic with on/off switch. Includes Micro Dot dust cover and batteries.