XS DXT and DXW Sights are the finest sights made for fast sight acquisition in all light conditions. Day-Light, Half-Light, or Low-Light, just "dot the i". Fast, simple and effective. This is the ultimate self defense sight system that provides sights you can see around the clock. Enhances sight acquisition in all light conditions Ultimate "Flash Sight" picture Excels in high stress defensive situations Improves Low-Light accuracy Low profile, snag free design Available with Big Dot Tritium or Standard Dot Tritium front sight Trijicon Tritium vials DXW = Defensive Express White (tritium front, white stripe (non-tritium) rear) DXT = Defensive Express Tritium (tritium front, tritium rear) Precision machined in Fort Worth,Texas