Ultimate Arms Gear ATI Mossberg 500/590 Halo Side Saddle Nine Piece Shot Shell Carrier Reticle Red Dot Open Reflex Sight Scope Package Includes: ATI Mossberg Halo 9pc + Ultimate Arms Gear Red & Green Reticle Sight Halo Side Saddle, Mounts Using Existing Screw Holes, Sleek Skeletonized Side Saddle Design, Three Mounting Locations on the Ejection Side, Six Mounting Locations on the Non-Ejection Side. Manufactured in the USA, Limited Lifetime Warranty - Warning!!! - Do Not Over Tighten Screws. Stripped Holes and Broken Screw Heads are NOT Covered Under the Warranty. Ultimate Arms Gear 4 Seperate Reticles. Full Windage and Elevation Adjustments & Adjustable Brightness Settings Intensity Control. Red Illumination. Thermoplastic Lens Cover Included. Battery Included !