No laws, but CFO policy.
Manufacturers can shoot the products they build and sell to "test" them.
Retailers of prohibited items can not shoot them according to the CFO even though there is no law against it.
So I can turn up at a LE/MIL shoot but can't shoot our suppressors or 30rnd mags.
Nor will any agency put it in writing that they would like to see a demo, which is what we require for the CFO to be given permission to shoot with our products. They won't do this because is goes against procurement policies/laws.
So we are in a catch 22.
The CFO said if our clients want to test them, they can go to the US to try them out or read the information put out by the manufacturer.
So for us it's like trying to sell a car and not let the client take it for a test drive.