Product DescriptionXS Sights R3D 2.0 night sights deliver brighter performance and a tougher build for everyday carry. The second-generation design installs with approximately 50% less force than previous versions and drives focus downrange with a blacked-out, serrated rear and a dual-illuminated tritium front sight. A high-contrast green photoluminescent Glow Dot surrounds the front lamp to charge with ambient light and stand out in low light. Built with CNCmachined steel and finished in black nitride, this suppressor-height set is purpose-built for Glock 21 pistols and provides a fast, accurate notch-and-post sight picture in both bright and low-light environments.Product Highlights Second-generation R3D 2.0 design for brighter, stronger night sights Suppressor-height set ideal for use with red dots or sound suppressors Dualilluminated tritium front with highcontrast green Glow Dot Blackedout, serrated rear sight reduces glare and enhances focus DIYer install rated; requires about 50% less force during installation Specs Brand Name: XS Sights Model: R3D 2.0 Night Sights Manufacturer Part Number: GL-R205P-6G UPC: 647533003872 Compatibility: Glock 21 Height/Type: Suppressor height; notch-and-post sight picture Front Sight: Tritium with green photoluminescent Glow Dot Rear Sight: Tritium; blacked-out; anti-glare serrations Finish: Black nitride Material: CNCmachined steel Installation: DIY-rated; reduced-force install Country of Manufacture: USA Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&&';;s manufacturer.