What is the difference between auto-ejectors and extractors?
Auto-ejectors have a spring-loaded device which ejects empty shells about 10 feet in back of you when you open the gun. Extractors merely lift the shells up about 1/2″ and you can very easily pluck them out with your fingers. Neither is necessarily better and it is purely a personal choice, but many find it easier not to chase/find/pickup empties and therefore select extractors.