Parker Reproduction shotguns were made from 1984 to 1989.
That makes the newest of them 37 years old.
Sometimes, 37 to 42 year old guns break.
Its not a thing I'd worry about, any more thatn the numbers of Model 21s I saw go belly up at the old Yoopshoot...
You say that as if a separated lug on a set of brazed barrels is reparable, in the manor of a Model 21 with a loose, soldered rib.
It is not. It is NOT a broken gun, it is a catastrophic failure that likely spells the end of that particular gun.
Best,
Ted