Just wondering who / where one would go about considering such a task. Is this ever done? Or a Fool's errand?

The rifle in question was kind of a misappropriation of efforts, funds and resources from the beginning. It was an ex-sniper that I resnipered many many years ago in my early collecting days. Problem is the bore is kind of rough explaining why it was probably decommissioned. Anyway, now that I have a few other legit PUSnipers the thing doesn't shoot as well and rarely makes it to the range since I discovered such.

Is there anyone out there that does this kind of work? I'd be interested in exploring.