Looking at the pics on here of the Indy:-
http://tedsholdover.com/2013/08/08/fx_bobcat_indy_bullpups_arrive/
The Indy has a second screw through the Picatinny rail underneath at the front, and inside the stock of my Bobcat, you can see, there's a partial whole in exactly the same place, but it doesn't go through, so these both have identical stocks, but the Bobcat only has one screw, so I guess it's supposed to be like it is