In a defensive handgun, having the right sighting system that'll get you on-target fast and easy is an essential element. That's the aim behind the XS Sights DXT2 Big Dot night sights, which feature a unique, intuitive aiming system designed to get shooters on target faster at defensive distances when using their popular Glock®handguns. Each pair of XS Sights DXT2 Big Dot night sights are built with a tritium-illuminated, round front sight that allow for fast targeting in the dark, while a photoluminescent ring around the tritium lamp also allows for easy aiming when moving from bright to dark environments. The front sight is combined with the company's rear-sight design that incorporates a vertical, tritium-illuminated stripe. When it comes to aiming, getting your gun on target is fast and instinctive: just dot the i! The XS Sights DXT2 Big Dot night sights are constructed with a shallow rear notch for a greater field of view, and the sight is designed for rapid aiming at targets inside of 15 yards. This particular pair of DXT sights are sized right for most of today's popular double-stack Glock®handguns. The sights fit all common holsters and may require filing to fit into the dovetail.