Songfacts®:

• Chvrches are a Scottish Electropop band consisting of lead singer Lauren Mayberry, guitarist Iain Cook and keyboardist Martin Doherty. The band name has no religious connotation and they inserted a Roman "v" in order to avoid confusion with actual churches on internet searches.
• On the face of it, Mayberry appears to be taking aim at a former lover:
  
  "You had better run from me
  With everything you own
  Cause I am gonna come for you
  With all that I have
  I am gonna break you down
  To tiny, tiny parts"
  
  However the Scottish singer denied this is the case. "A lot of people think 'Gun' is about a relationship, but it's not," she told Consequence of Sound. "But I think that's the great thing about it. What they meant to me isn't what they'll mean to all when they hear them."
• Mayberry told NME regarding the song's bitter and violent imagery: "We're not really in the business of writing summery pop songs. They're great when you get a good one, but I'd never want to write 'La la la, I love you' pop songs."