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Actually, something that focused the report forward in a narrow wave would be super useful.
That exists as a product you can buy. They call them “Blast Diverters” or “Blast Projectors”:


Simpsons did it
This is an actual product:

They’re called “Blast Diverters” or “Blast Projectors”, and they’re technically a safety device that directs the sound waves from gunfire downrange, reducing the impact on the user’s ears without falling afoul of the restrictions on suppressors.






