XS Sight Systems Big Dot Shotgun Sight Bead on Plain Barrel Orange Standard. Upgrade a Home-Defense Shotgun to a High-Contrast Front Sight that Absorbs Light and GloWS in Less Than Ideal Conditions. Optic Orange Is Designed to Offer a High-Contrast Sight Picture When Shooting in Bright Light Conditions and Maintain Its Visibility in Decreasing Light Levels. To Ensure Visibility in Low Light When Uncharged Optic Orange Is Primarily Based on Yellow With a Hint of Red. the Increased Surface Area of the Convex Dot Increases Light Absorption Intensifying the Charge of the Glow Properties of the Dot. Fits on Shotguns where 0.125in-0.140in Diameter Bead Sits on Pedestal. Front Sight Only - Big Dot Sits Over Existing Bead and Installs With Any Two-Part Epoxy Like Jb Weld. Specifications for XS Sight Systems Big Dot Shotgun Sight: Manufacturer: XS Sight Systems Fabric/Material: Steel Additional Features: Big Dot's Outside Diameter is 0.188in Condition: New Illumination Type: Non-Illuminated Gun Type: Shotgun Finish: Blued Features of XS Sight Systems Big Dot Shotgun Sight: Steel Sight With Blued Finish; Optic Orange Photoluminescent Front; Snag-Free Design; No Questions Asked Warranty Package Contents: XS Sight Systems Big Dot Shotgun Sight XS Sight Systems SG-2005-2N: Big Dot Shotgun Sight Bead on Plain Barrel Orange Standard