XS Sight Systems DXT2 Big Dot Pistol Tritium Night Sight S&W M&P Full Size Compact Orange Standard. The XS Sight Systems DXT2 Sight System features a Patent Pending Glow Dot that Absorbs Light Increases Light Absorption and Intensifies Glow Properties. The XS Sight Systems DXT2 Smith & Wesson Pistol Front and Rear Sight utilizes an increased surface area of the convex dot to increase light absorption. The increased surface area of the convex dot is designed to increase light absorption intensifying the glow properties of the dot. The XS Sight Systems DXT2 Smith & Wesson Pistol Front Sight Round Rear Sight is a quality XS Sight Systems product that will last a lifetime. Specifications for XS Sight Systems DXT2 Big Dot Night Sight - S&W: Manufacturer: XS Sight Systems Gun Make: Smith & Wesson Rear Sight Color: Green Fabric/Material: Steel Gun Type: Pistol Illumination Type: Tritium Additional Features: Big Dot's Outside Diameter is 0.188in Included Accessories: Red Threadlocker Allen Key Condition: New Mount Type: Dovetail Finish: Blued Features of XS Sight Systems DXT2 Big Dot Night Sight - S&W Steel Sight With Blued Finish; Green Tritium Front and Rear; Optic Orange Photoluminescent Ring Front; Snag-Free Design; No Questions Asked Warranty Package Contents: XS Sight Systems DXT2 Big Dot Night Sight - S&W Red Threadlocker & Allen Key XS Sight Systems SW-0029S-5N: DXT2 Big Dot Pistol Tritium Night Sight S&W M&P: Full Size Compact Orange Standard