Product DescriptionBuilt for fast, precise target identification at extended distances, the Trijicon HD XR Night Sight Set enhances your Smith & Wesson M&P Shield in 9mm, .40 S&W, or .45 ACP. A thinner front sight post maximizes your field of view, while the photoluminescent orange front outline and black U-notch rear pull your eye to the front sight in bright, transitional, and low-light conditions. Tritium-phosphor lamps deliver a clear, self-illuminated sight picture day or night, and are protected by rugged aluminum cylinders with silicone rubber cushioning and sapphire windows for durability. Professional installation is recommended.Product Highlights Designed for S&W M&P Shield pistols in 9mm, .40 S&W, and .45 ACP Thinner front post for a wider field of view and faster target acquisition Orange photoluminescent front outline with black U-notch rear for rapid sight alignment Tritium lamps glow in low/no light; 12-year lamp warranty from date of manufacture Durable construction with protective aluminum cylinders, silicone cushioning, and sapphire caps Specs Front sight color: Green tritium with orange outline Rear sight color: Green tritium with black outline Front blade height: 0.185 in Rear blade height: 0.262 in Front post width: 0.122 in Gun make/model: Smith & Wesson M&P Shield (9mm, .40 S&W, .45 ACP) Material: Metal with tritium-phosphor lamps UPC: 719307214071 MPN: SA639-C-600856 Brand: Trijicon 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.