TFX Pro Tritium Fiber Optic Handgun Sight Set (TG13FN1PC) Includes: Yellow/Green Front and Green Rear Sights. For Handguns: NH FNP-9, FNX-9 & FNS-9 (including Compact). Day-Night. Truglos created the original TFO day / night sight, then made it virtually indestructible with our hermetically-sealed TFX sights. Now, we are taking TFX technology to the next level for professionals and shooters who demand maximum performance from their handguns providing ultimate reliability, accuracy, and brightness no matter how tough things get. Features Contrasting colored front sight ring for even faster focus Quick and accurate U-notch Design Angled rear sight edge for emergency one-hand operation All features of our popular TFX Handgun sights Patented Ideal solution when brightness matters Cutting-edge in design and function Precision engineered for your hunting needs Perfect for both pro hunters and hobbyists Made from premium materials to be virtually indestructible Resistant to shocks and vibrations Protective coating for maximum strength and durability Fusion of rugged dependability and high accuracy