It's a worry because of most people's feelings about gun ownership, and in the USA it goes to extremes. Here in the UK, it tends to centre on inappropriate gun licensing to people who clearly should not have guns, illegal possession, and concerns about arming the police. We don't have the sort of national rifle association that influences politics, so it boils down to whether you approve of young people learning to shoot in a supervised setting. I would rather they didn't (never allowed my children to have guns as toys), but acknowledge that it isn't illegal. I'd have steered mine towards archery if they had shown an interest in target shooting, and let's face it, it might be better than those bloody X-box 'games' that involve realstic scenarios, killing humans.