I'm assuming you already have the magazine cap off and the magazine spring removed ????,,,and the follower is just sliding back and forth the length of the empty magazine tube now.
It can't come out the breech end of course by design.
It should just dump out the muzzle end.
But if it doesn't the edge of the magazine tube at that end may be very slightly bent out of round so the follower can't easily slide past it.
(Some people use a pliers, hammer and other means when handling that retaining 'cap' on and off, damage results )
If this is the problem,,,one thing you can try is to insert a heavy object like a substantial size lead bullet,,or a blunt face punch into the empty magazine tube from the breech end.
Push the carrier down out of the way and the empty mag tube is exposed.
Let the bullet/punch/whatever slide toward the muzzle as you tip the gun muzzle down. That'll push the follower ahead of it.
When they come to the problem point,,,use a shucking motion to carefully ram the weight and follower past the problem point of the magazine tube and out.
Maybe I'm misinterpreting this entirely,,then disregard! and just take Bulletslap's tip and remove the retaining cap and spring.
It is designed to easily slide out from the tube.
Watch your eyes!!
