GEN3 Ultimate Sighting System (USS) 3-9X40mm scope with Red Micro Dot optic (DDAB). Micro Dot mounted directly to the scope body. The Ultimate Sighting System (USS) GEN3 gives you all the benefits of a Mark III Tactical 3-9X magnified scope for intermediate/longer range targets and the advantage of a Micro Red Dot Reflex Optic for close range targets. The Electronic Control Panel turns On/Off the Illuminated Reticle, adjust the brightness level of the Illuminated Reticle, changes the Reticle Color from Blue or Red. There are five brightness settings for the Illuminated Reticle. The USS whole Ocular body functions as a large Magnification ring. There is also an adjustable reticle focus ring at the end of the ocular lens. Low Profile Elevation Turret with a Bullet Drop Compensator (BDC) calibrated for M193 55gr. FMJ Mil-Spec ammo. AR15/ M4 1 Scope Centerline height. New GEN3 Integrated Auto Locking Quick Release Mount, fits Weaver/ Picatinny/ MIL-STD 1913 type rails. Features a redesigned and more compact lever. Fully Multi-Coated lens for a bright crystal clear image quality. Die Cast Aluminum Body with Black Anodized body. Scope uses 1 each AA Battery (Included). DDAB Micro Dot uses 1 each CR2032 Battery (Included).