I have not had the opportunity to fire a gun not because I wouldn't want to try it on an official case, but as a result of the fact that the ownership of guns in Nigeria ain't meant for ordinary people unless you got it with a licence. Also, using such guns can be on extreme cases and not doing so on anyhow situations.
Yes, I have a opportunity to fire with a gun. I shot a air rifile when I was a young scout, nothing bigger than that though. The UK has a strict law on guns and requires over a certain caliber cannot be held without a gun license.