Tritium is a radioactive isotope of Hydrogen that occurs in a gaseous state. This gas is contained in glass vials with a phosphor coating that are used to illuminate the dot in Armson OEG sights. We use only green Tritium which has a half-life of 12.5 years. The brightness of the Tritium will be one half in that time as when originally produced.

Tritium Upgrade/Replacement is available for virtually ally Armson OEG sights for $39.95 + S&H. See the Tritium Replacement Form for additional information.

Tritium in OEG sighting systems is designed to supplement ambient light in low light conditions. As the amount of available light decreases the dot will grow dimmer and self-adjust as your eyes adapt to the available light (i.e., pupil dilation/constriction). The Tritium boost in OEG sights is not intended to provide a bright dot in dark conditions as this interferes with the eyes natural ability to adjust to available light. It is important to allow your eyes sufficient time to adjust in very low light conditions.

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