Depends what sort of gun but generally- I'd take it to a range for target practice every week because there's no point having one if you don't know what to do with it, and if you're half arsed with guns you're really dangerous.
I don't want a gun however.
Shotgun I'd leave it in it's cabinet til I wanted it.
...have fun shooting coke cans, old fridges, tellies, bottles, effigies of Donald Trump, Tommy Robinson and Theresa May hastily drawn onto bits of blockboard until the novelty wore off, then I would destroy it so it wouldn't fall into the wrong hands. You?
Mine would be a spud gun or a water pistol.
I would attack Corbyn whilst shouting, "Traitor, traitor, traitor, traitor, and wear an Andy Cap and not that stupid Russian revolutionary Dr Zhivago cap you protesting Leftie!"
Then I would pop him with a but of spud or squirt him.
Get rid of it very quickly.....it would have been given to me or I would have found it so off to the cop shop post haste...if I could find one that is still fully functioning.