TriStar and CZ offer current production 16 gauge models who else?
I just saw a nice 16 Charles Daley in town.. It had been used but still seemed a solid gun. Price wasn;t all that high as this is rifle country. I think Daleys are good solid guns.
FAIR makes some nice ones. So does Merkel. And there are tons of used European 16 gauge sxs shotguns out there, as well as some O/U.