Very easy, just open the gun (action) fully. If the piece that removes the shell from the chamber (ejector or extractor) snaps out with authority and with a "Snap" sound you are lucky and have one of the ejector models (lucky if you are a hunter more than a benchrest shooter). If that piece just moves out slowly with no noise about a 1/4 inch or less you have one of the new "improved" :-D :-D extractors...Good Luck and I hope you get the one you want. Some here prefer the extractors, you can see by my post I am more of a hunter than a shooter and since I believe in keeping my guns clean I have never had a problem with the ejectors, perhaps I have just been lucky, but that's the way it's been for me....<><.... :grin: