you could use some prop effects from workshop, i don't quite remember how exactly they were called, though those probably were ryu-gi's or whatever. or you can use advanced particle controller and use some gunfire particle with very low delay.

as for animating, for both you can use the "teleport" trick where you hide the effect/particle props outside of the camera view, and then move them into and out of the view by creating frames that have no inbetweens (put keyframes right next to each other on timeline)