Shoot better day and night. XS F8 night sights increase front sight focus by using a large, high-contrast front sight for fast sight acquisition. The wide notch increase the front sight visibility and easily aligns with the rear sight. XS F8 night sights give you the best notch and post solution for fast sight acquisition in all lighting levels. Additional features: Rear Sight Overhang - Reduces rear sight glare in bright daylight for greater sight definition. Rear Sight Ledge - Aids in one-handed slide manipulations. Wide Rear Sight Gap - Increases the amount of light around the front sight for greater visibility in low light. Figure 8 Sight Picture - Fool proof alignment prevents shooters from mixing up the front and rear sight..