I've tried a number of mounting options on terms of putting a light on a forend, and they all beat up my hand under recoil. Because of that I much prefer it mounted to the tube/barrel. I've got pumps, so my hand moves away from the light.. I like clicky so I have the option to have it on through the whole process. That's less of an issue with a semi. I've been running Fenix lights for a few years but the new Surefire lights look great