DXW Night Sights are defensive tritium sights designed to enhance your EDC pistol. The front sight uses a reflective white dot that bounces ambient light for increased low light visibility. We designed the DXW sights to be large and highly visible; this helps solve many issues, from aging eyes to deteriorating vision. The shallow V rear has a simple, low profile that provides a wide field of view. The dot-the "i" sight picture, with a tritium dot in the front and a white stripe non tritium in the rear, prevent confusing the front and rear sight in high-stress situations. In most gunfights, the victim and attacker are moving, and the victim is threat-focused. DXW Night sights are bright and easy to see day or night! The express sight concept started it all for us over 25 years ago. Our founders wanted to engineer a sighting system primed for defensive situations that was big and easy to see. Modeled after African big game hunting sights, express sights are designed to give you a visible and combat accurate flash sight picture when seconds count. Front Sight Dot Width: 0.188" Overall Sight Height: 0.300".