I think I'll clean the rust off and see what is underneath and record the serial# and see if I can save the ribs. Someone says it has to be about 800F to melt silver solder and I don't know how much higher it got or what kind of fire it was.I don't think there is a receiver in the pile that matches.We've scrapped almost 75 pounds of gun parts and misc. related items that were deemed unusable and/or repairable.Got 2 nice 8" cannon balls out of a wooden barrel and headstock for a lathe.