This is a one off custom light using a Wiz2x2 driver (30/350 mA) and a LuxIII UY0J LED. Since the titanium head and body are poor material for thermal relief, the LED was soldered to a sterling silver heat sink and the drive current has been kept down. A sapphire window with the inside A/R coated is used in front of the 20 mm reflector. Overall length is 2.75".
Tritium vials in the tail can be seen from the top as well as the bottom. The relief in the lanyard hole allows for tail standing of the light.
Milled flutes aded to the head to improve grip:
