Sort of look like it from the pics. Is there an undercut on the front of the M17 pocket. Not quite sure how good an idea it is to have a screw you can't easily check that if it comes loose will potentially impact the function of the gun. However, with the advent of loctite maybe that really isn't as huge a worry as it once was.
I suspect the screws go in from the bottom, the same way the cover plate comes off. That will likely have the side benefit of at least somewhat limiting user manipulation of the screws, which from the military's perspective is probably a good thing. It's an interesting optic, but I'm guessing it will not be cheap (given what they get for a Romeo 2).