The bottom rail of a 2012 AIAW SA?

[OverWatching]

Hi all,
Anyone here know what the bottom metal plate on the front of my AIAW SA is? It's metal, and looks like a long black plate with a single long slot in it. I want to put an RSS compatible plate on it and I'm getting conflicting answers. Any help?

 

[Afkirby]

I believe it’s AI’s own mounting system, It uses a sort of t-nut like an anschutz rail. I’m sure someone makes a compatible RRS plate for it.

 

[Afkirby]

It looks like HRD Gear makes one that works, people are saying that the anschutz hardware will fit it, but I’d call them to make sure.

 

[NoLegs24]

I sent my AW 2.0 to my buddy Matt at Sawtooth Rifles... Might have an Arca/ RRS rail when I get it back..