A "new car" is new until it has been sold (the last new car I bought was damaged in the dealer's parking lot, before I could even lay eyes on it. They offered to order a new one, I could take the repaired car, or take one off the lot . . . which may also have been damaged and repaired, as the dealer does not have to divulge damage done before the car is sold).
Is a gun that has been in and out of a display case a hundred times, had the slide racked by a hundred people, still a new gun, just because it hasn't been fired? I'd say that gun is a lot less new than one that was fired a few times then put away.