wind gun

Just as he had announced, Accelerator had quieted the Skill-Out group within ten
minutes.
But he hadn’t used his powers that entire time.
At first, he had manipulated the atmosphere to create a gust of wind greater than 50
m/s knocking most of his enemies to the ground. He then turned off his powers and shot
them while their movements were in disorder. When they were about to counterattack,
he would create another gust of wind and start shooting again once they were rendered
helpless. That pattern had repeated again and again.
He had easily won after ten minutes.
Because of this strategy, he hadn’t even used thirty seconds of powered time.

- Toaru Majutsu no Index Volume SS1, Chapter 2 Part 4