Not to pick on anyone but the whole idea of self-defense flashlights really needs to be approached with caution.

I don't know where people get the idea that simply flashing your Surefire into the bad guy's face will somehow make him turn and run for his life.

In the military/law enforcement field, tactical flashlights are thought of as an accessory to the primary weapon but never really a weapon in its own right. You can "zap" a bad guy with 100 or 200 lumens as often as you wish. Yes, it will be dazzling momentarily and might buy you a few moments, but that's it. In a shootout that might just make the difference between life and death if it means you can hit the bad guy before he can pull the trigger.

But if you don't carry a firearm, that same flashlight will be much less of an asset on its own at close quarters. From what I've seen, I seriously don't believe the light beam of your latest Surefire, Nitecore, Fenix or whatever happens to be in vogue these days will stop a determined attacker. Not by a long shot.

Worse yet, while you're trying to flash the assailant in the eyes you should probably be doing something else entirely. Like maybe running the heck out of dodge, looking for an improvised weapon better than your flashlight, taking advantage of terrain or at least getting into a fighting stance so the bad guy doesn't just tackle you to the ground like a rag doll...

IMHO the only real use of a flashlight in a physical confrontation is as a baton. Obviously, that's one field where a huge Maglite is at an advantage. Smaller flashligts (like AA-cell sized) have a lot less to offer in that department. Trying to use a small "tactical" light as a kubotan simply can't compare to the impact of a 2lb. Maglite. In terms of size and weight, a single or double AA-cell light is little better than a large pen - basically a kubotan. Read: not very effective and only really useful in the hands of a strong and well trained individual. (And let's keep it on a proper perspective: a small can of pepper spray is only marginally bigger and likely much more effective.)

In either case the flashlight is only a small impact weapon with a very short reach that adds a little weight to your punch. Nothing more than that. It might be helpful in a fight but it still means getting involved in a
hand-to-hand confontation where you'll likely get hurt, maybe killed, especially if you have no real training under your belt and your strength and conditioning levels are not on par.