Robert,
The "extractor" is the device shown in the center of this photo (centered, on top of the breechblock), that I edited from one of your photos.
With the toggle locked back and open, you can carefully lift the front end of the extractor (the end closest to barrel) up gently. Lift it up about 1/8" and you should see the word "Charge" on the left hand side. Or maybe your marking will be "Geladen". The right side of your extractor should not have any markings...so take a look there as well...
It is the cross-shaped device and the front-most tip of the extractor hooks onto the bullet casing and pulls out the fired bullet casing when the toggle begins to move backwards in its recoil. The extractor pulls the casing out of the chamber and further back on the right hand side the "ejector" helps throw the casing out of the receiver...
The extractor also as a 2nd. dual purpose. When your breech is closed and there is a bullet in the chamber, the extractor will be held up 1/16" to 1/8" to indicate a round is chambered. You can feel the raised extractor at night when you cannot see...it was the luger's new model modified extractor (having 2 purposes...).
Please let us know the marking on your gun's extractor...
Regards,
Pete... <img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />