I think it's a pretty cool design. The main drawback is it's price. It's a post-ban gun that costs as much as a pre-ban rifle. As a new rifle, there really isn't that much in the way of accessories, etc. available for it yet. With it's higher price tag, the market remains small, so there's little reason for anyone, other than it's manufacturer, to develop much for it. All sorts of people will try to market things for the AR, because it's a ready market. The M-96 is much smaller, so there's no economic reason to do that yet.
I'm not knocking the M-96, I'd love to own one myself, but I just can't see plopping that kind of green down for a post-ban gun.
Ross