The backplate is removed from the slide and here we can see the guts.
The small circle on the bottom left is the cylinder stop piston and it can be removed. It is indexed by that arm and under spring tension. It is one of the biggest follies I've had with this gun so far. As the back plate is held by two small screws, without Loctite, the screws can begin to back out. As the lower screw is deep inside the recesses of the gun when the gun is fully assembled, it can be near impossible to screw it back in. Without the necessary spring tension to operate the cylinder stop, the gun may have a tendency to skip a cylinder when fired.
On the right, there's an arm that looks like it's case hardened or something. This is called the Slide Distributor and is the magic of the whole system. When pulled back, this is what operates the cylinder when engaged by pulling the trigger or when returning back to rest once fired. This can be seen in some later pictures.
The two cylinder release levers can be removed and readjusted using the same hex screw you saw in the first few pictures. The pin they are attached to, the operating pin, is kind of reminiscent of an AR safety pin with the cylinder release levers facing downward as SAFE and facing the operator as FIRE. You cannot pull the trigger when they are down.
When the cylinder has returned and ready to fire, as like a traditional revolver, the extractor piston pushes the operating piston and returns the operating pin back to a fire ready status.