they suck BAD
I had to almost give mine away.
by far the best stock is the AMD, rock solid, although you must permanently modify the rifle to use it (replace the trunion) it is also super light weight.
Second choice is the E. German or polish side folder, all steel, rock solid (mostly) but a little heavy. Doesn't require permanent modification to use it. I had to modify the screws though. the front one needed the head turned down, and the rear one was to long. and lock tight is important too, otherwise the loosen up in bump fire...