Check the listing for details. Mossberg 500 590 Reflex Red/Green Dot Sight Scope. Color: Black, Condition: New. Listed at 39.99 USD. Reflex Red/Green Dot Sight Features:Aircraft grade aluminum body to withstand constant Fog proof and shock-resistant housingNitrogen charged with weather resistant sealsCoated lens provides superior light transmission, resolution and scratch resistanceDual-illuminated (Red, Green) reticles with adjustable rheostat for brightness control4 different reticle patterns provide variety for any target typeIntegrated Picatinny / Weaver mounting systemUnlimited eye relief for quick target acquisitionIncludes protective lens cover Specifications:Magnification: 1X Objective Aperture: 24 X 34 Click Value @ 100 yds: 1 MOA Dot size: 3 MOA Length: 3" Weight: 4.2 oz. ** MOUNT DETAILS Picatinny Weaver Scope Sight Rail Mount For Maverick 88 Shotgun Mossberg 500/590 The picitinny/Weaver Scope Mount is for Mossberg Model 500 and similar Shotguns.Mount has 13 position slots. Comes with allen wrench and 4 screwsGreat way to mount a scope, sight flashlight, lazer or other accessory to your Mossberg.Specifications:Color: BlackMaterial: AluminumSize: 14cm/5.5" Length (13 Slots)Package Includes:1 x 13 Slots Weaver Scope Mount4 x Screws1 x Allen WrenchScrews are for Mossberg 500 manufactured after 1998 only.