This one looks like it could be good. Although it's a good bit bigger than a kill light.
http://www.dealextreme.com/p/wf-800-3w-cree-q2-led-flashlight-2x18650-4xcr123a-7-4v-17v-6965
this one is a little smaller
http://www.dealextreme.com/p/wf-600-3w-cree-q2-led-flashlight-18650-6951
http://www.dealextreme.com/p/wf-800-3w-cree-q2-led-flashlight-2x18650-4xcr123a-7-4v-17v-6965
this one is a little smaller
http://www.dealextreme.com/p/wf-600-3w-cree-q2-led-flashlight-18650-6951