XS Sight Systems Ember Standard Dot Iron Sight AR Mil-Spec Orange. 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. Front Sight Only - comes with AR installation tool. Outside Diameter Standard Dot 0.140". Each full rotation of front sight gives a 5" shift at 100 yards. made in specialized factories. Fits AR front sight housing with front sight detent at 3 6 or 9 o'clock. Specifications for XS Sight Systems AR Mil-Spec Ember Standard Dot Iron Sight: Manufacturer: XS Sight Systems Gun Model: Universal Gun Make: AR Platform Fabric/Material: Steel Gun Type: Rifle Illumination Color: Orange Features of XS Sight Systems AR Mil-Spec Ember Standard Dot Iron Sight Steel sight with blued finish Photoluminescent Orange Glow Dot No tritium No Questions Asked Warranty Package Contents: XS Sight Systems AR Mil-Spec Ember Standard Dot Iron Sight What firearm models does the manufacturer say XS Sight Systems AR Mil-Spec Ember Standard Dot Iron Sight is compatible with? The manufacturer suggests that XS Sight Systems AR Mil-Spec Ember Standard Dot Iron Sight is compatible with UniversalXS Sight Systems AR-2015-1N: Ember Standard Dot Iron Sight AR Mil-Spec Orange