See here for a photo of a XML Tower module
http://www.candlepowerforums.com/vb/showthread.php?307230-Surefire-XM-L-Tower-Module-DD
The KT4 would not be a wise choice for installing a LED Tower especially if you are
running it for extended periods. The thermal heat path from a KT4 is less than
ideal. The Tower module sits in the reflector, the reflector sits around the shock
absorbing foam+ silicon gaskets therefore the heat from the module has no where
to go.
The KT1/2 is a one piece design, the reflector and the head is a single piece of
aluminium therefore the heat will transfer from the module to the reflector
then on to the head therefore allowing the heat to escape.
Save the KT4 for incans :naughty:
if it is output your looking for then a direct drive XML other than that I would pick
a neutral XPG driven at 1500mA