Ultimate Sighting System Gen-2, 3-9x42 Mil-Dot Features Improved Scope Centerline height raised to AR15 1 scope height and more room for low profile Rear BUIS Blue 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 Improved 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 is the perfect platform for the New DXDAB 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 DXDAB is the GEN II version of the DDAB NcStar Ultimate Sighting System Gen-2; 3-9x42 Mil-Dot Ultmt Sighting Sys. Gen-2; 3-9X42 MIL Dot