The ATN Javelin line of long gun lights includes the Javelin 600W, an exceptionally bright tactical light that produces 600 lumens. That much light output can actually temporarily blind a suspect for up to 10 seconds. Considering that most gun battles between cops and bad guys last less than 10 seconds, that's a major tactical advantage. The J600W is a rugged piece of equipment constructed of aircraft-grade aluminum and weighing nearly a pound. So it's not for everybody. Fortunately, there are two smaller lights in the Javelin line. Both are tactically bright, ranging from 200 lumens to 220 lumens.