I wonder if that would be classifed as an SBR or an AOW or both.
Well, if its a machine pistol its neither, its a machine gun and unless you are a dealer, LEO, or Mil, we can't have one

since its obviously made post 1986.
If its a semi only, then I would guess it would be considered an SBR. Regardless of it folding up, its a short barreled rifle, due to the shoulder stock and vertical front grip. Now if it was capable of firing in the closed position, it would be an AOW.
considering its built on a glock pistol upper, i don't see the point of it unless it was full auto capable. If its not full auto, the pistol is smaller, just as accurate, etc. I'll stick to my Surefire 6p (with LED conversion) and Glock 20 unless I need to break out one of the bigger badder sticks.. Then its Surefire M3 Combatlight and suppressed short barreled rifle AR15. ???
edit to add: If it was full auto, It'd be mother F'n B to the A. I'd definitely sport that on a walk with Fido.