Ultimate Arms Gear Tactical CQB 4 Reticle Dual Red / Green Open Reflex Sight with Integral Sunshade And Rifle Shotgun Pistol Crossbow Weaver-Picatinny Rail Mount Battery And Lens Cleaning Kit Tubeless Open Reflex Design 4 Separate Reticle Patterns In Both Red and Green 6 Diferent Brightness Settings (3-Red 3-Green) Includes Built In Sunshade And A Standard Weaver-Picatinny 7/8" Rail Base Windage and elevation adjustments