Just to put it into a real world perspective as in, been there and done that in the middle of the night. Those of you without a good, bright light, you are at an extreme disadvantage. There is a reason weapon lights were invented. I have been in the situation where a very bright Surefire light saved someone's life, meaning his life was spared in that instance. Identifying a threat is crucial. The surprise of 70+ lumens in pitch black is a life saver. I've done raids in the pitch black with NVG's on, but nothing beats white light surprise. A light alone might even save you sending a round into another person or mistaking that bump in the night as a "bad guy." Not saying that gun "XYZ" isn't your best choice, you would be shocked at the power of a light.