Yes, EXTRACTOR is a Scrabble word!

Letter values in Scrabble US: E 1, X 8, T 1, R 1, A 1, C 3, T 1, O 1, R 1.

Is it a valid word?

EXTRACTOR is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

an instrument for extracting tight-fitting components
an apparatus that uses centrifugal force to separate particles from a suspension
a mechanism in a firearm that pulls an empty shell case out of the chamber and passes it to the ejector

Also: cartridge extractor, cartridge remover.