1001001,
That is the rail system that I'm considering. I'm concerned how it attaches to the shotgun though. Would of been better IMO if it attached to the receiver. Best way would be if it replaced the Picatinny rail that comes with the shotgun and gave you an uninterupted rail from the end of the handguard lal the way back to the rear iron sight.
The Brugger & Thormet system looks better than the sidearmor unit. Both have benefits over each other unfortunately.
http://sidearmor.com/images/shotgun/m401/PICT0439_640.jpg
I'm considering the front half of the Side Armor unit , then using the Brugger & Thomet handguard rail system. I don't know how well the Brugger & Thomet will hold a zero. If it attaches the same way the plastic stock handguards do, I don't have much faith in it holding a zero. This doesn't matter for the light or the vertical forward grip (if I use one.) If I use an OTAL though, this will matter a great deal.
The big question is how to use a tail cap clicker or use preasure switches for both a light and a laser on this shotgun. Maintaining momentary light on a 12 guage is difficult.
I'm leaning towards using a XM06 on my light with a preasure pad routed to where my thumb will rest on the forearm. This will minimize my chances of an AD with light. Then, for an OTAL, have the pad on the opposite side of the forearm.
If I use a forward grip (Tango down,) I'll use a tail switch on the light, then use a preasure pad to the vertical grip for the OTAL.
Any ideas would be greatly apreciated.
-Steve