Steel Tritium / Fibre Optic
The TRUGLO TFO sight are the most revolutionary innovation since TRUGLO, Inc. introduced fibre optics. TFO refers to our patented combination of Tritium and Fibre Optic technologies. The Tritium 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 lighting conditions. Tritium does not need batteries and does not need to be charged with light--it simply glows!
For Glock models 17, 17L, 19, 22, 23, 24, 26, 27, 33, 34, 35, 38, 39