I was absolutely convinced Kyoraku was gonna die right there, cursing Kubo for hiding his bankai like all the other ones.
Aaaaand he survived. Which is cool. That gun must really have sucked if it hit him in the eye and didn't kill him.
Apparently, there are different translations for what Unohana said in the latest chapter.
In particular, Mangahere has a different translation than Mangastream.
And I'm guess that Mangahere's translation is the correct of the two.