Answer:
The ending of the story allows the events to remain open-ended. The crew leaves the planet hoping to come back, believing that the gun has been destroyed. Only the reader knows that a small army of self-repairing gadgets and an atomic warhead are moving toward the gun. Dramatic irony occurs when the reader has more knowledge about a particular outcome than the characters. So, in “The Gun,” the reader knows that the gun will repair itself, but the characters flying away are unaware of this information. This ending evokes a mood of fear and suspense as the reader realizes that the weapon of destruction will regenerate itself and will most likely strike the crew and others once they return to the planet.
Explanation:
Hyperbole
If don't know what it means its best to start of with what you do know
Process if elimination.
It's not a simile because it has no like or as.
Its not Personification cause its not giving the object human features.
And its not metaphor cause its not literally Applicable. I'm assuming.
So that just leaves you with hyperbole.
in future of course ....idk ..but i prefer my country