Where are the Left Handed Mirokus?

I've been looking around the secondhand market for my first shotgun (assuming I'm granted my cert)

Been left-eyed I'm looking at the left handed options available.

Looking at the big three; It seems there's quite a few 525 and Silver Pigeon availible in Lefty. But no MK-38 that I can find. Are they neutral? or just not liked by the left handed shooters?