[O.B.Left]

For the pure Swinger that chooses to use only CF, as an option, the left arm "blasts off" the chest as part of the Pivot Train, sequencing deal when the shoulders slow. The period of Arm Acceleration. As the Left Arm moves away from the chest, #4 firing, #1 the right arm must also straighten, but passively , not actively as a Hitters would. CF induced #4 firing.

Both Swingers and Hitters are said to be always "Driving", Thrusting but for the Swinger it is a structured, via Extensor Action, CF induced and passive application of Thrust.