Original 09 carbine stocks are not that hard to find. They come up from time to time.
This is one of those situations where you have to be clear what you want. Even if you find an original stock and all the barrel band, etc., you end up with a carbine that isn't original. It is representative. Often, that's good enough if you are after a shooter grade representation of a 1909 carbine. Typically these pieced together examples cost more than what they'll fetch in the market place. Generally, I'd prefer to buy an original not a pieced together example.
On the other hand, customizing a 1909 isn't inexpensive either.
The last two 1909's I had became an 8x60 and a .376 Steyr.
