The journalist DID get the correct type of gun. The title is not written by the journalist and is the only place revolver is used.
And the way you say, “what other basic facts have they misrepresented” makes it seem like you think this was an intentional thing to skew the story. Only gun nerds will care about that detail, so the editor/copy person who actually wrote the headline likely did no research at all and just used what normal people think of as a generic term for a gun. The point is that the type of gun is not important. Just like if the person had said the officer was wearing a cotton shirt under his uniform when it was actually a poly-cotton blend, it’s not 100% accurate but it doesn’t change the point.
Blow up the system by bringing in a person who will install an even worse system. Smart move.