I've been thinking about this, and went in a sciencey direction:
While there is a continuum, there is a threshold of time below which neural feedback isn't fast enough to adjust forces at the muscles (to affect what the gun does before it fires). Sensory input is still flowing, so one can react to that, but only in the next cycle (shot). This is termed "feedforward" control, as opposed to continuous neural feedback.
Feedforward control is driven by central pattern generators ("clocks") in the brain, and can set the basic patterns of cyclic motion. Most of how we move our bodies involves a combination of feedforward clock with mechanical feedback, and neural feedback. If you run fast across rough terrain, you use a lot of feedforward control. If you trip, it can take several steps to respond to a stumble.