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The Blitzkrieg Components AR-15 Flat Front Sight Post does not use Tritium but instead a Luminescent Contrast Stripe. The Luminescent (Glow) Stripe glows very bright when charged and the glow brightness dissipates gradually in darkness. The brighter and longer the light charge is, the brighter and longer the glow will be. Sunlight and Tactical LED flashlights give the best charge, but any type of lighting will work. Typically, in total darkness after being charged you can expect it to glow very bright for 5 minutes, brighter than tritium for 30 minutes and at a lower level for a few hours.
The paint stripe does not have tritium in it. We do have tritium models. The orange paint is a bright contrast color but does not glow. The Luminescent Green Paint is a glow paint and does provide a low light capability.