The person who did that needs some training before they hurt someone and shouldn't be carrying fire arms!!
Removing a magazine doesn't safe a gun and shouldn't. Why would anyone pull a gun drop the mag and pull the trigger...??? Stay away from people like that or get them proper gun handling training before they kill someone
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent