you have to take the barrel off to get the extracter out then you can take out the breech plug also you can buy a new extracter that swivels out of the way while you have it a part that way you wont have to go through this again
IMPORTANT! The extractor screw is a small and short slotted screw. Make sure your screw driver fits perfectly so not to damage it. Also do it over a small white towel or cloth in case you drop it you will be able to find it.