I just want to add a few comments. I agree on the Defiant too. Its a HUGE light. Does a great Job for the price. Another cool & simple head knocker is the Mag Lite D LED. Decent output, with head knocker capabilities. And if you google around, you can find you a new bezel with the Crenulated edges that screws on to the front of your 2 D Mags replacing the part on the front that reads MAGLITE PROFESSIONAL. Makes it a solid head busting platform for great defense of ones person or property. One of the members here sells them or you can make your own!
Old thread, but gives you a idea.