HiViz MPFD21 FastDot H3 Sight Set for S&W M&P Red Fiber Optic Front / Green Tritium Rear

The HiViz MPFD21 FastDot H3 is a low-profile single-dot sight set engineered for the Smith & Wesson M&P family of striker-fired pistols, including the M&P Shield and Shield Plus. Designed as a direct replacement for factory iron sights, the FastDot H3 pairs a red fiber optic front with a green tritium rear for true 24-hour illumination: the fiber optic element harnesses ambient daylight for a bright daytime sight picture, while the tritium insert keeps the rear sight glowing in low light and total darkness.

Built on a rugged steel body finished in non-reflective black, the FastDot H3 sits low to the slide so the pistol continues to fit standard holsters without modification. The clean single-dot rear configuration simplifies the sight picture for fast target acquisition, making the MPFD21 a popular upgrade for concealed carry, duty, and range use alike.

The MPFD21 installs in place of the factory M&P, Shield, or Shield Plus sights as a drop-in upgrade. Combined, the red fiber optic front and green tritium rear give the shooter a vivid contrast day or night - a noticeable step up from factory M&P sights for anyone running a carry or defensive pistol in this family.