Alan B
Flashlight Enthusiast
Lack of good heatsinking makes leds run very hot and I think that K2's can withstand that heat better than other leds.
I really wonder if there is lack of good heatsinking. Reading the instruction manual (available online at Batteryjuncion) they clearly are heatsinking through the back of the drop-in directly to both the head and body tube. Lots of aluminum there in a D M*g. Might be adequate.
-- Alan