In mine. It's the only one I know of, of its kind. Nothing else is this advanced. It's too heavy to not be anchored. Or for anyone in my world but me to wear it.

[He moves his fingers, flexes the plates, lets her see how it moves-- almost exactly like a real, flesh and blood arm, just with slightly more range of motion and with lots of mechanical noises as gears spin and buzz.]

It doesn't disassemble. But it does do this.

[He flares the plates on the forearm up, to stand on their ends, making the arm look a little like a pinecone. It more clearly shows the workings underneath.]