I use a UTG flashlight on my rifle and it puts out 150 lumens. It's been through hell and I've never had a problem yet...well I had to replace the bulb when I first got it but that was it. Still works fine and will light up a room like no other. i don't see a point in spending 500 bucks on a surefire flashlight when I can pay 75 bucks for something almost as good. It's a no brainer. Even if I had the money, I wouldn't spend that much on a surefire.