After countless attempts at creating my own Mag extension for my Vinci, I finally got my RCI extension. LOVE IT!!!! Not only does it install in seconds, but its all one piece and assembled when you get it.
One thing I did notice is that using a barrel clamp with my previous contraptions proved to be a bad idea. The barrel and the mag are not made to be one unit on this gun. I am hesitant about putting a clamp on the RCI - xrail extension until I hear its ok.
Forget dealing with Benelli, they have terrible customer support. You can call and email all you want, you won't get anywhere with them.
When I put it next to my M2 it makes the M2 look like a model T
First - 3 gun with the new extension coming up in a couple weeks!
Now if I can find a way to get the speedbolt without buying another complete gun.