TruGlo Tritium Fiber Optic Sight for Smith and Wesson M&P, Green Front & Rear

The TruGlo TG131MPT Tritium Fiber Optic Sight Set (Green Front & Rear maintains the brightness level of the sight in low light (or NO light) conditions that means you can see your sight even in complete darkness, with perfect transition through all light conditions. The tritium does not need batteries and it does not need to be charged with light, it simply glows.