(No, it’s not just that. Even the bacterial wall bluff…was nothing more than preparation for this. If I had known Mugino Shizuri was aiming for me, I could have easily dealt with it… That’s why he made me think that any showy possibilities were nothing more than bluffs…That way, I would let my guard down and give them a chance to slowly aim at me…)

With 2 or 3 shots, all of the attackers could have been taken out as long as all of the shots would hit.

If even one shot was evaded, it was over. No, the white wings coming from the mask most likely could deflect those weakened Meltdowner attacks.

Toaru Majutsu no Index vol.22 ch.11 pt.2