M3 super 90 factory tube extention

[elits1]

New to the forum and would greatly apriciate any guidance from the professionals. I will have a new M3 super 90 in about 30 days. This will be my first Benelli. I would like to install a factory 2 shot extention tube (if they are available). I have seen aftermarket tubes but none factory. Someone please help.

[d]

try e-gunparts.com. They have almost anything you could need. The mag tubes are legal and available.
http://www.e-gunparts.com/product.asp?chrProductSKU=840810&MC=

[elits1]

Thanks for the info, that is a great help.