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 conditionsUltimate "Flash Sight" pictureExcels in high stress defensive situationsImproves Low-Light accuracyLow profile, snag free designAvailable with Big Dot Tritium or Standard Dot Tritium front sightTrijicon Tritium vialsDXW = Defensive Express White (tritium front, white stripe (non-tritium) rear)DXT = Defensive Express Tritium (tritium front, tritium rear)Precision machined in Fort Worth,Texas