I tried a couple of them when they were called AR-7s - with both, every round resulted in a few more aluminum grindings in the works - and 'every round' meant the ones that actually went 'bang!'. Most attempts to shoot them resulted in (a) failures to feed (b) failures to fire or (c) failures to eject. To fire an entire magazine without a failure was an unheard of event, and the misshapen scraps of lead that actually made it out of the barrel rarely landed anywhere close to your point of aim.
You couldn't even throw the damn things in the river because they'd float, someone would find them, and they'd go on to cause more misery.
Maybe the name change and the paint jobs helped, and they might now indeed be truly remarkable examples of the gunmakers art. I'm sure they have their advocates; they are after all, very "tacticool".
Personally, I'd feel better armed with a pocket full of rocks.