Product DescriptionThe Mepro HYPER-BRIGHT fixed day/night sight set delivers exceptional visibility in any lighting. Engineered with premium Swiss-made tritium vials front and rear, the sights glow green in low or no light with no batteries required. A highly visible yellow phosphorescent ring surrounds the front tritium vial to drive the eye for faster daytime acquisition, while the rear features a black outline with a U-notch that naturally centers the front post. Built from ultralight steel with a snag-free profile, these sights are drop proof, shockproof, and install as a direct upgrade that fits standard holsters.Product HighlightsDay/night visibility with premium Swiss-made green tritium vials front and rearHigh-contrast yellow front ring for rapid daytime target acquisitionU-notch rear sight promotes fast, precise alignment under stressUltralight steel construction; drop proof, shockproof, snag-free designDirect factory-sight replacement; no batteries or slide modifications requiredSpecsProduct Type: Self-illuminated fixed handgun sight setSeries/Model: Hyper-BrightFront Sight: Green tritium with yellow phosphorescent outline ringRear Sight: Green tritium with black outline; U-notchMaterial: Steel with Swiss-made tritium vialsFront Sight Length: 0.50 in; Width: 0.14 in; Height: 0.23 inRear Sight Length: 0.28 in; Width: 0.83 in; Height: 0.28 inCompatibility: Glock Standard Frame 17, 17L, 19, 22, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 37, 38, 39, 45Illumination: Tritium (always on; no batteries)UPC: 810013520781MPN: 402243121Brand: MEPRO USA LLCDisclaimer: 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.