Yes. To expand on that short answer a bit, the extractor is really just a small flat spring with the necessary hook, lug and pin to perform its function. Being a spring it is tempered and strawed just like the ejector. Looks kinda cool too!
As an added note, I just re-read the ad and see that the breechblock is a mis-match. So although it is a very nice looking early gun, since the frame has been relieved and the gun is a mis-match the price is a bit too high. Certainly not just a shooter, but I would think a price of $3500-$4000 would be more reasonable (the magazines are easily worth $250 each and the holster another $150 or so).