Re: Surefire Shotgun Forends
I've got the Surefire forend on my 870 and love it. The weight isn't an issue for me, since it just sits by the bed and I'm not likely to notice how much it weighs if I ever need to use it for home defense. I did a 3-gun match with it recently, and it worked fine during and after a fairly rough time. One thing that I definitely like about it over a clamp-on style light mount is that I have complete control over the light - not just when the slide is forward and my thumb, fore-finger, etc. can reach some fixed mount light. I can momentary the light or rocker it on at any point, no matter what else I'm doing.
Keep in mind that surefire shows an LED version in their current book. I haven't checked to see if it's in production yet, but I recommend the LED in just about any application. My M600C Scoutlight, X300, and several E1B LED lights are head and shoulders above their supposed incandescent equivalents, and a shotgun is hard on a filament. LEDs would be perfect for that application.
I highly recommend the Surefire forend, at least for a beside-the-bed gun, or patrol car rig.