The only one that I recall seeing was a Spanish-made Destroyer carbine in 9mm Largo (whatever that is). The guy who had it priced it out of my curiosity range. I can't see much traction for a 9mm bolt, but thought that the Ruger PC-9 and PC-4 "Police Carbines" would have sold enough to keep them in production.
Yeah, 9mm Largo a 23mm case. I remember looking at one of those and wondering if it could handle 9x23 Winchester ammo. You'd have to ream it .010 deeper but who knows.
