Cons? I think it's a proprietary pistol grip, the open charging slot looks cheap, and it's not really all that light, especially compared to the nice polymer AR I had BT (before trudeau).
Not to nitpick. Grip is a standard AK grip. I replaced mine with Magpul one.
Regarding stoppages. Mine absolutely hates chinese copperwashed ammo. Barnaul lacquered steel shoots like a dream.