AmeriGlo® Trooper Tritium Night Sights for Walther® PDP Pistols feature a performance-enhanced 3-dot design modeled after and inspired by the sights used by the Federal Government for duty use. Stainless steel construction and the corrosion-resistant finish provide maximum strength and longevity. The ProGlo front sight boasts a high-contrast outline with a green tritium insert for maximum visibility in low-light conditions, while the serrated rear sight features a subdued square notch to promote front sight focus for faster and more accurate shots on target. Complete sight set. Professional installation recommended.