I had a sticky stock too. Can you open the mag, lower the floor plate and give it a yank? It wants to rotate forward so if you can pry something between the bottom of the receiver and the back end of the mag housing that might help. I had to use a punch and a hammer and strike the very rear of the receiver on the bottom end where it meets the stock about 25 times to work it loose enough to remove to stock. That might also help you get the mag unglued as well. Take it easy though. My stock was really rough on the inside and that was the issue so I just sanded away some material on the inside of the stock and that fixed it. At the very back end of the receiver where it contacts the inside of the stock is where I removed the most material to make takedown easier. Not a lot though, take it slow and test it a few times as you go to make sure it fits just right. Mine is a '53 Tula laminate.