@Chrona
Gun knowledge outside of actual gun owners is remarkably rare. It'll generally boil down to whatever depictions in Hollywood/Bollywood/whatever the Asian equivalent is.
For example, extended family that don't shoot don't even know which button is the slide release vs safety. And silencers? They think it's just that, silent.
Even actual knowledge can vary depending on platforms, like I'm a pistol shooter and didn't know why an AR15 gets so dirty inside until I sat and read up on how a DI gas system works.