Sorry but I think you got ripped big time:
http://www.texastradingpost.com/militaria/type2aa.jpg
Note the locking lug. Lucky you didn't lose a finger or worse.
Another:
http://picturearchive.gunauction.com...thumbnail1.jpg
Another:
http://picturearchive.gunauction.com...bf96647db1.jpg
I have never seen a rifle of a take down type that wasn't solid through the rear locking lug. There is no reason to not make it that way. The barrel of these is solid through the locking lug as shown by the schematic. Looks like at best, someone cut the barrel off an original right at the "break" and someone later on tried to hide the break.