You could heat that screw segment, stuck in the bottom metal, to around 600* with a propane torch and tap it out. JB Weld and Epoxy can't stand that much heat and it won't hurt the steel. But you probably know that, already...
DF
The head popped loose using a hammer and a punch from behind.
Lock, Stock and Barrel gunworks SLC, Ut USMC 69-73
"This is my rifle, there are many like it but this one is mine. My rifle is my best friend, it is my life."
