XS Sights R3D 2.0 Green Night Sight for Glock 21 Pistol

XS Sights’ second-generation R3D 2.0 night sights deliver enhanced brightness and durability compared to the original design. Installation requires 50% less force than previous versions, making setup straightforward. These sights are engineered to endure extended EDC use and the demands of regular shooting. A serrated, blacked-out rear sight pairs with a dual-illuminated tritium photoluminescent front sight to direct your attention downrange. The R3D 2.0 represents the brightest notch and post option available, enabling fast and accurate shooting across bright and low-light conditions.