The Night Fision Optics Ready Stealth Night Sight Set Yellow Front Blank Back for Walther from Night Fision delivers a brighter, more durable sight picture with their patented injection molded sleeve that securely holds Swiss tritium vials and forms The Perfect Dot, a decisive improvement over traditional painted-on rings. This set features the brightest tritium night sights on the market, with a domed lens that collimates tritium rays for a sharper, faster target acquisition in all lighting conditions. CNC machined from high-quality steel and finished with Black Nitride for enhanced wear and corrosion resistance, these sights pair rugged dependability with precision engineering. Installation is recommended to be performed by a qualified gunsmith, ensuring a precise fit and optimal performance for your Walther PDP configurations, including the 4-inch and 4.5-inch variants. Built in the USA with Swiss tritium, the stealth design provides a yellow front and a blank rear to reduce glare and improve presentation under varied lighting. Ideal for practical pistol enthusiasts, competition shooters, or duty-minded users seeking a durable, daytime-visible, night-ready aiming solution that respects gun-handling discipline and delivers consistent sight alignment across day and night use.