Marathon GSAR, pistol is Sig Sauer P226, tritium gas lamp luminous, and marathon, as well as complement each other.
The luminous light of the pistol is same as the luminous light of the watch which are both made by photoluminescent film material. There are two kinds. The coating of superluminova needs to absorb light and then give a brief light.
The other is a self-illuminated tritium gas lamp, known as siglite, which is invisible when the light is intense and can be seen more clearly in the dark. Tritium has a half-life of 12 years and can last for about 25 years.
