Made In USA
Most of Buck's designs are made in Idaho, a few miles from where I live.
The knife you're looking for is a 301. This is the newer three-spring Stockman. Made right here.
The 30x and 31x line also includes a smaller stockman-type pattern called the "Cadet" (303), and a number of other traditional patterns (Lancer = 305, Companion = 309, Whittler = 310).
Their 37x and 38x traditional patterns are currently made in China. The quality control is good, and the knives themselves are well made. Just not made here.
Their 110 (and 111), 112, 119, 120, 105, 102, and so on are all still made right here -- including the 110 and 119 that Wal*Mart sells for that absurdly low price.
I have [strike]a few[/strike], uh, several Buck knives, and most of them are locally made. I have a few Mayo design patterns that are imports, but the quality is still good.
At their summer Factory Sale event, I spoke with some of their employees and was told that they are bringing ALL their production back to the US.
On the whole, I mostly buy the US-made Bucks, but their imports work just fine.