A common claim online is that J.K Rowling said (at some point or another) that a Muggle with a gun would beat a wizard with a wand. For example, on TV Tropes:
J.K mentioned that in a battle between a wand and a shotgun the gun wins.
Or here:
JK Rowling is on record as saying that a witch or wizard wouldn’t be able to stand up to a muggle with a gun.
Some people, though, suspect it to be manufactured.
The question of whether this quote is accurate has been exhaustively covered in other questions, but its veracity hasn’t.
Is there any evidence that Rowling ever actually said this?