It's also your responsibility to teach your children gun safety, and to make them gun-safe.
That includes the Eddie Eagle "stop; don't touch; get an adult" mantra, but, in my mind, it also includes: "No, we don't 'play' guns. Guns aren't toys. But if you want to learn how to shoot, I'll teach you. We'll start with the safety rules, and when you've learned them really well, we'll try handling some guns for practice. Then you can learn to shoot."