Was there a particular advantage to changing the Flash II over to the Arc actuator? The actual internals of the locks seem to function exactly the same, so I'm just curious if there was a reason for switching other than to make the Flash II look consistent with the Trident and Aegis models. The one thing I can think of, would be that the arc-actuator provides more leverage to move the piston down out of the blade's path and so might allow for a stronger spring driving the piston which would in turn provide a stronger lock-up. But that could be an incorrect supposition on my part.