My personal belief is that no-one whose job doesn't require it should have access to firearms of any sort , having said that I agree with LAO's very sensible post , if a responsible person uses them responsibly , then there is no problem.
I do have to wonder why he felt the need to use it in the house though , playing soldiers maybe ?
He's about that age isn't he ?
24, thick and allegedly in the habit of having cybersex with strange men.
Just the sort you want to bring home to meet your parents.