As an AR? They are too new to be rated.
As a piston AR platform that is looking to fill a niche' market?
I think they are poised to be VERY successful in the fact that their engineering is really well thought out.
The fixed piston, connected to the BCG, eliminating an op rod banging on a separate BCG is brilliant.
The upper and fore end, without the "need" of them to be threaded and joined together, is new and hopefully beneficial.
However as I have yet to personally handle one of their rifles, all I can say is on paper, from a strictly below apprentice level gunsmith standpoint, they SEEM to have addressed several critical issues and made intelligent decisions concerning them.
If you buy one, we DESPERATELY need a video of performance and a Range Report.