A little update:

Managed to get the stock off the barreled receiver and here is what I found: some pitting and a cracked stock, ha!

This pitting is on the barrel right where it connects to the receiver. Is this a possible danger or does it look safe based on this photo? There is also a bit of pitting on the barrel, but it's not too deep at all.



And here is the crack. The smaller piece that is now separated off the main part of the stock by the crack can be bent back a good deal. How should I go about fixing it? Thanks!