Before I watched the movie "The killing joke" I read the comic again. I was always wondering why the gun of the joker has two barrels. Can it be possible that the main barrel is just used to trigger the flag with the words "click click click" on it?

The second barrel could be the "real" one that actually shoots bullets.

This theory could mean, that the joker had the opportunity to kill batman, but he decided to let the game go and just released the flag.

Has anybody ever thought about this? Here is a picture of that special gun.

Jokers' gun

  • By the way, how's the movie? Does it follow the source? Commented Aug 19, 2016 at 17:20
  • 1
    That's probably meant to make the gun look older. 19th century revolvers often needed extra support for their barrels, so an extra tube was added to the side of the barrel to stiffen the whole structure and keep it straight. That's all it is - a tube of metal. You can also see this on old muskets. Commented Aug 19, 2016 at 19:29

2 Answers 2



That is not a second barrel. It is the slide for emptying rounds from the cylinder.

On old style revolvers, the entire cylinder does not pop out to allow for speed loading. Instead, you open a latch and use the ejector rod which runs along side the barrel to individually eject spent rounds from the cylinder.

You can see it on single-action revolvers.

enter image description here

Here is a revolver without the casing around the ejector rod that demonstrates how it works.

enter image description here

Click Click Click

As far as the Click Click Click flag. It is more likely he has a special bullet loaded which pushes out the flag.


I just looked at my Killing Joke, and Joker clearly says

God damn it... It's empty!

Surely, he could be lying.

enter image description here

We see that the flag comes out of the bigger barrel. When Joker shoots Barbara, it is unclear whether the bullet exits from bigger barrel or smaller one.

enter image description here

Anything else is really just speculation, although I clearly remember at least one (old) comic where Batman was caught off-guard and incapacitated, and Joker let him live while he could finish him off.

  • And I thought only Bats made that mistake.
    – Nu'Daq
    Commented Aug 20, 2016 at 2:54
  • @Nu'Daq which one? Commented Aug 20, 2016 at 8:25
  • @Gallifreian- not killing the other when he had the chance.
    – Nu'Daq
    Commented Aug 20, 2016 at 17:27
  • @Nu'Daq Bats would disagree Commented Aug 20, 2016 at 18:53

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