Expensive but good idea.
"I bought one of these to install on a 3 AA maglite I travel with. The extra length on this flashlight makes having this item a great addition to the end of this and gives me the peace of mind that I have something that I can shatter glass with for an emergency whether in a car or a hotel room. For anyone that's every thrown a chair at a window and had it bounce back, well, it's funny but it scares you half to death in a hotel fire situation if that's your only way out. Now, after having this installed for about two years something squirrely is happening. I went to put new batteries in and when I turn the head of the flashlight it doesn't always turn on. I put the OEM end cap on and the flashlight works fine. I then put this tailcap on a 2 AA maglite and it's working fine. I have no clue why it's suddenly not working consistently in the 3 AA LED Maglite but clearly something isn't making full contact. I would still recommend this to a friend but obviously with caution due to my experience."
