Optics Ready Stealth Night Sight Set for Glock 43x Features When it comes to tritium gun sights aluminum sleeves and painted-on white rings are the norm. Night Fision breaks the mold literally. Our patented injection molded sleeve design not only holds our tritium vials securely in place it creates a brighter and more durable ring we call The Perfect Dot that provides maximum visibility both day and night. Optics Ready Stealth Night Sight Set for Glock 43x Specifications Brightest Tritium Night Sights on the market Domed lens collimates tritium rays for a sharper sight picture CNC Machined out of high quality steel Black Nitride coating used to improve wear and corrosion resistance Installation: Gunsmith Recommended Built in the USA with Swiss Tritium Fits Glock Model 43X MOS