Jhin's fully assembled gun surprisingly looks very ionian.

It might be symbolic of what he thinks Ionia can achieve if they actually advance their culture. He resent Ionian tradition because it's stagnant, and with Whisper fully made perhaps he hopes to show what Ionia is actually capable of. Patriotism with a unique spin to it.

Thanks :D Indeed it's really something that would come from Ionia, kind of a spirit rifle :P