>>5771063inner shoulder ball-hinge joint hinged to outer ball hinged joint, hidden under a large fuzzy shoulder armor.
note the lack of articulation elsewhere.
So you get a crazy amount of poseability from one limb or area, and then nothing in other places.
Which isn't to say that that shoulder is the only articulated place, because he has swivels and ball-hinges elsewhere, but again, only where it's able to be hidden.
It's actually better than that Metal Gear Revoltech soldier.