[Humboldtsnee]

It's not. I guarantee you they know the difference. They are choosing to use common vernacular to speak to their audience.

People know what a "silencer" is because that's what it's called in movies and TV. Much fewer people know that it's actually called a "suppressor".

Meet the audience where they are.

[nonethewiser]

I'm not going to take their word that they are illegal firearms when they demonstrate ignorance of firearms and firearms ads.