As soon as your child can physically pull a trigger, is it not time to teach them safe gun handling?
Procrastination in teaching your kids or securing your firearms can easily end in tragedy whether at home or at their friends. If you have kids too young to teach gun safety, be sure to use a gun vault or similar storage device for your smaller weapons and handguns next to the bed, etc. These make them secure and reasonably accessible to you. They also aren’t that expensive. Certainly cheaper than the potential consequences. Practice testing them weekly and replace batteries as needed. Rifles should be locked in a gun cabinet or secured with other types of gun locks to help keep curious little fingers away.
At what age do you believe people should start teaching their kids about gun safety?