I'm fascinated by guns, and yet I'm not really a gun guy -- which is to say that I think they're cool, but I have little actual interest/experience with them physically.
As a result, a lot of these facts came as a surprise to me (a few of them I knew, but lets just say that I'm kinda crushed that silencers apparently don't work the way years of TV and movies had me believing they did).
Enjoy!