KaliSIG the tritium lamp in the Trijicon sights is good for a MINIMUM of 10 years many Trijicon sights are still good after 12-15 years. After the lamp dies it is easy enough to send the unit back to Trijicon to have the lamp replaced, costs less than 10 years worth of batteries too. This is a durable item, not disposable. Another plus is that it will give you a lot more warning than the battery powered units and you won't have to remember to turn it on (or off) for use.
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