By the looks of how determinations are being made, that won't keep it from being an AOW. The weight, chamber and other BS tests they came up with likely mean even an ar with just a pistol tube is still an AOW.
I wonder how this new criteria would impact PDW, pistol caliber set ups like the MPX, Stribog and others.
It almost seems like this is an indirect attack on braced firearms, without actually explicitly banning braces themselves.