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maybe the well is too tight on the sides... it is a pain to get the mags out of my charger... one day I'm going to trim it a little but so far I've just lived with it.
I'm not sure how you are trying this, but I use the gravity method on mine. Just hold gun right side up and push the button upward. If its a Ruger mag it should drop right into your hand.
The method Ruger uses for the magazine release is pretty positive, so I'm not sure what else might be binding up your mag.
Chet15