What is the most fun gun in 40k? And when I say most fun, I mean most fun and not most powerful!
For me it's the flamer, just being able to make a burning noise as you lay down the template is fun enough (yes, sad I know). Add in auto hits with no cover saves for extra fun! Of course the strength five heavy flamer is even better, let alone the strength six AP three versions that are about, but they all make the same noise...
Burn baby burn!
So what is your favourite gun in 40k and why?