I was reading about the new Surefire fore-end that has the LED and a TIR lens. Here is the description from the Surefire site: Compact 6-volt (2-battery) system features a virtually indestructible LED emitter focused by a TIR lens, which produces a brilliant beam optimized for close- to medium range applications. The 618LM generates 200 lumens of output and has a tactical runtime of 2 hours per set of batteries, with gradually decreasing output afterward. http://www.surefire.com/618LM Does anyone have any experience with the Surefire LEDs? And/or this LED with the special lens? I've searched here and in tacticalshotguns forum (http://www.shotgunworld.com/bbs/viewforum.php?f=7&sid=e759144a1c0fa58a2f64193a7ae64ffb) and haven't found anything. Any info will be appreciated.