Acid Tactical Green & Red 4 Reticle Reflex Sight Electro Sight RDS-33 for Shotgun Rifle Pistol Open Reflex Tubeless Design 4 Different Reticle Pattern Both Red and Green 12 Different Brightness Settings (6-Red 6-Green) Integrated Weaver-Picatinny Rail Base Great for Rifles Shotguns Pistols