Synonyms for Extractor (same or very similar meaning)
WordNet sense 1 (an apparatus that uses centrifugal force to separate particles from a suspension):
centrifuge, separatorWordNet sense 2 (a mechanism in a firearm that pulls an empty shell case out of the chamber and passes it to the ejector):
cartridge extractor, cartridge removerFrom the ODE community, based on WordNetadd/edit