XS Sight Systems R3D Night Sights Tritium Green Smith & Wesson M&P Shield/ M&P M2.0 Shield Black. The blacked out rear increases contrast against the front sight. Available in orange or green the front sight ring is equipped with our Ember Glow Dot Technology which absorbs ambient light and glows in low light. RAM sights are the brightest options for fast and accurate shooting in bright and low light. Green is the best option for low light and has the brightest glow intensity. Orange contrasts the best in bright light settings while still maintains visibility in low light. The front sight tritium lamp is brighter than the 2 rear sight lamps reducing the possibility of mixing up the front sight tritium vial with a rear sight vial in low/no light. The front blade measures 0.145 (3.68 mm) wide and the rear notch is 0.170 (4.32 mm) wide which increases the visibility of the front sight. RAM sights are installable by sight pusher tools or by using a hammer and punch. Fits Glock models 17 19 22 23 24 26 27 31 32 33 34 35 & 36. Specifications for XS Sight Systems R3D Night Pistol Sights: Manufacturer: XS Sight Systems Color: Black Rear Sight Color: Green Sight Style: U-Notch Fabric/Material: CNC Steel Gun Type: Pistol Illumination Type: Tritium Illumination Color: Green Features of XS Sight Systems R3D Night Pistol Sights: Steel sight with blued finish; Green tritium front and rear; Photoluminescent ring front; Snag-free design; No Questions Asked Warranty Package Contents: XS Sight Systems R3D Night Pistol Sights XS Sight Systems SW-R033S-6G: R3D Night Sights Tritium Green Smith & Wesson M&P Shield/ M&P M2.0 Shield Black