*** The Law Tactical Folding Stock Adaptor is not intended to be fired when folded*** That makes it a bot slow for regular AR. There are systems that don't require a receiver extension that this may be better for IMHO.
But it says right on it: "Do not fire" and visible when folded! That should keep them from doing it. /sarcasm off Actually, it is quite a little marvel of engineering, as it seems that all you have to do is unfold and it is ready to fire. The rifle in the picture is compact, but it is already an SBR and relatively compact without the folding stock mechanism. I would like to try this for myself to see if it is worth having, but I'm not going to plunk down $189 on a whim.