I bought one of these for a rifle I was going to build.
But I fell so in love with it as a flashlight, I never bothered to put it on the rifle. It's 700 lumens, has a laser sight and strobe button. It's blinding bright. On my under-the-bed Mossberg I have a Surefire LED G2 with a pressure switch. For everything else I have night sights on my grab guns.