Magpul and WML

Going to pick up a Magpul forend for my 870 and a Inforce WML to add to it.
My question is what length of Mapul rail should I get to attach it ?

I would go with the 9 slot the wml is a little longer then others.

It’s really personal preference. It’ll fit on any of them. Do you want the rail to be roughly the same length?

The 5 slot is plenty long enough. I cut it down a little to get it as far forward as possible. Why the hell would you want a 9 slot??? GH

Ok I picked up the short one, had to choose between the cantaliver version.

Kinda liked the ramped or angled piece on the cantaliver but it looked like it would stick out a little further.

Thanks for the help guys.