According to Dan, at Tactical Warehouse the KL6 head will fit directly on the Surefire M900A weapons light. This would be the ultimate tactical light, with the bright LED light, the extended run-time, and the ability for the bulb to greatly outlast the standard incandesant set-up. Surefire had better put one of these together, soon. It would end up being the new tactical weapons light, for the 21st century /ubbthreads/images/graemlins/wink.gif