Ownwers typically used to re serial number barrels
So it does not matter what gun they Come off
The manufacture markings and import markings are what matter
Having said that- this is a good deal== whichever barrel it is
and I offer no opinion on if it is a K32 or K80 unless I know the barrel markings or have seen them-- I only point out the distincitions
I once traveled several hours to look at an engraved combo set- guess what? K32 O/U barrel-- the guy claimed he didnt know-- well the markings are clear= didnt matter the serial number matched the unsingle barrel and the receiver / forearm iron
Regards from Iowa
Gene