Yes, I've been hearing "long gun" on local news outlets recently, too.
I was ambivalent when I read about the recommendation to use the term "long gun" rather than any specific model or "assault rifle."
While it enhances accuracy where a specific model is unknown (in the sense of using "dog" instead of "cocker spaniel"), I wasn't sure of how it fit in to the Left's program of reshaping the language for their own propaganda ends.
While Paranoia is my middle name in some folks' view, I'm not quite ready to say that the advertising impact of "long gun" is either negative or positive.
But I have a constant "what are they up to now?" attitude about Leftists (Communists), so I'll wait and see how its advertising impact develops. You can call this "paranoia," but I call it "experience."
Terry, 230RN