[Kirigiri's not freaking out, and Minato's taking that as a positive sign as he points it at his temple- he's still not going to actually pull the trigger though, since that might attract other less savory entities.]

I can summon my Persona by pulling the trigger- it's possible to do so without one, but I haven't have had much luck with that. [And if Kirigiri had seen him casting a barrier before this she should be able to work out why.]