That's a great question! It does seem like 10-gauge shotguns have become a bit of a niche item these days, mostly overshadowed by the popularity of 12-gauge. From what I recall, Browning used to make some, and I think Remington might still have an option or two, though they can be harder to find. It really depends on whether you're looking for new production or open to used firearms. Are you looking for a 10-gauge for a specific purpose, like waterfowl hunting, or just out of general interest? That might help narrow down the search!