Thread: At what point do you call it a "new gun"

Hi All
I was given a brand new gun for my 21st birthday with scope / sling and case.
Here we are 15 years later and it has been dragged all around the country , high and low.
Now my dilemma is that it needs (I want) a new barrel as the old barrel is pitted and doesn't look good at all, It also could do with a new stock as the old one is also looking battered ....
I want to keep it as original as possible

After speaking to a couple of gunsmiths. it is cheaper to buy a new gun and have the new parts fitted to it....
I don't want a new gun for sentimental reasons...

The scope has been replaced already last year (the original one lasted well but eventually fogged due to me slipping on a river bed and landing on it)

If I replace the barrel and stock and scope... is it still the original gun with a few replacement parts??
Or is it just a new one with a couple of old parts??

Not sure if I just retire it and start again??

Cheers