Is it legal to own military-grade sonic and ultrasonic weaponry?

I searched and couldn't find any laws regarding them. Some police forces use them according to Wikipedia. So start building!

>>34742514
Unfortunately illegal here in bongland.
The way the politicians had the last few anti-fun laws worded means that any form of directed energy projector counts as a firearm.
So all we can do is use stadium grade speakers and Stockhausen...

>>34742514
Some commercial cruise ships and cargo ships have them to ward off pirates, so you don't need to be military to own them