HIVIZ FastDot H3 Tritium Fiber-Optic Smith & Wesson M&P Handgun Sight Set - Red / Green - The HIVIZ FastDot H3 Tritium/Fiber-Optic Sight Set for Smith & Wesson M&P is the newest and most innovative sight on the market designed for those who need a reliable sight that is bright, easy to acquire, and fast when you need it most. This unique, low-profile single-dot sight system combines fiber-optic and tritium for 24-hour illumination. Leave behind the batteries and the bulk; stay on target with the FastDot H3. Features Made in the USA ; LiteWave H3 sight set; Brightest, fully encapsulated Tritium; 24-hour illumination; Mounts like traditional sight sets; Fits standard holsters; LitePipes: Red front / Green rear; Patented technology;