Yep, it's much more common than other countries, but gun owners are still in the minority of people, and of the gun owners, many of them only own a pistol (for self defense) or a hunting rifle for hunting, with owning just one pistol being by far the most common.

And like you said, some Americans own a LOT of guns. Those people tend to view guns as something to collect, or as a status symbol, some even have dozens of different guns they never even use or maintain, but just hoard. They tend to skew the average number to be higher.