The SRT 3-9X variable magnification rubber armored scope with a 40mm objective lens features a fully integrated Green Laser on top of the scope body. Top mounted fully adjustable Green Laser: 532nm, Max output <5mw, Class IIIA Laser. The Electronic Control Panel adjust the brightness level of the illuminated P4 reticle, changes the reticle color from blue or red and turns the Laser On/Off. There are five brightness settings for the Illuminated Reticle. The SRT 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. Integrated Auto Locking Quick Release Mount, fits Weaver/ Picatinny/ MIL-STD 1913 type rails. Features a redesigned and more compact lever, integrated flip-up lens covers. Includes two AA batteries.