XS DXT Sights are made for fast sight acquisition in all light conditions. Sights feature a low profile, snag free design and are easily installed. Includes a Tritium green dot front and green vertical line rear sight. Tritium inserts are surrounded by a thin white line for enhanced use in daylight, Big Dot versions have a larger white outline on the front sight surrounding the tritium insert. Standard rear dovetail is .330" x 65 degree.