The TFO Glock 42/43 Set RS Handgun Sight uses the same proven technology as the TFO archery pins. TFO refers to the patented combination of tritium and fiber-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 great transition through all lighting conditions. Tritium does not need batteries and does not need to be charged with light... it simply glows.
Provides great visibility in all shooting conditions
Glows in the dark
No batteries required
Fortress finish provides a permanent protective coating for maximum protection
Utilizes quality Swiss tritium for maximum brightness
Concealed fiber cannot be seen by target
Snag resistant design/fits standard holsters