I can get really annoyed when writers get stuff like that wrong.

I was reading a science fiction novel and just about every time a gun was fired in a vacuum the author included some detail about how the weapons were “vacuum sealed” or some such thing, so that they would fire without oxygen.

…except guns work just fine in a vacuum already. All modern firearm propellants (and many historical ones) are self-oxidizing and don’t rely on atmospheric oxygen to burn.

I snapped me right out of the book every time I came across it.