I've used the TLE-5 module with out the reflector and head, but you have to be carefull. We were airsofting into the dark, and I used that set up so that I could find all of my equipment in the dark. I gave it to my friend who promptly knocked the module out of the bi pin base. Of course I had another flashlight to find it and put it back in, but it would have been bad if that was my only light.
So unless you can find a way to keep it from falling out, I would try to find something different.