“Mass produce the previous process. Simulation firing with ten Hidden Rifle Imperceptible Rifles.”
With those words, ten muskets appeared in his hands, five in each in a metallic fan-like array. If those guns were fired, Kamijou Touma would inevitably fail to avoid or dodge.
I’ve got to… run!
Kamijou had decided to run before the firing. Though he knew it was a pointless struggle, he actively tried to flee. Then, he realized that behind Kamijou, at his feet, Himegami was still barely breathing. Even further behind, Stiyl was immobile.
“IDIOT! WHY ARE YOU STOPPING!?” yelled Stiyl with shock.
“Preparations complete. Ten hidden rifles: fire simultaneously.”
With his command, ten blazing, blue-white bullets struck Kamijou

Toaru Majutsu no Index vol.2 ch.4 pt.1