[Thekatar]

I do not have much experience with shotguns but I do have some experience with using lights during low-light and nighttime shooting.

Generally, long guns (carbines and shotguns) tend to benefit from a mounted white (non-LED) light of at least 60 lumens.

The SF foreends for the shotguns are the way to go if you have the money, although I personally am not enamored with pressure pad tape switched - too easy for a light ND. One model of the SF does have a lockout switch, though.

Emptymag, your solution looks good. I persoanlly am a big fan of the SF G2 Nitrolon and 6P flashlights. For a long gun application I would recommend using a shock-isolated bezel and possibly also the click on/off tailcap switch.

As a sidenote, if any of you are running Benelli inertia-operated guns, I'd keep any accessories off of them. These are awesome guns but IMO are daylight guns. They do not like having things attached to them.