While this MAY be true.......
The Seoul emitter, while it is more efficient, and runs cooler at the same drive current. The problems lay with the fact that the Seoul emitter and LUX V emitter have little in common. The beam would be completely different. The LUX V and the KL4-s special reflector were designed to work together to create the very unique beam pattern of the KL4 head.
So a simple emitter swap while it may produce interesting results the charm and quality of the Original KL4 beam would be lost.
I suspect that SureFire spent alot of time and money in researching the KL4 optic system. It still produces a fine beam by an standard.
Don't you think that if all that was necessary to achieve good results, was a simple emitter swap, that SureFire would have done just that by now?
I do.
Maybe they are working on a second generation version. Maybe not.
Maybe they are waiting for the emitter technology to evolve to a point where they produce an emitter which will produce a beam similar to the LUX V emitter that those emitters which are available today.
It may take a little while but I am sure a suitable replacement will come to market. In the meantime we wait and enjoy the KL4 just like it is..One of many flashlight (heads) which warm up when used.
Yaesumofo
I would have agreed maybe a year or two ago.
Its just that if there was a Seoul emitter in the KL4 head, it would have
about twice the run-time for the same brightness without heating up
nearly as much.