The only thing we can do is gun-proof our children by educating them about guns. Obviously, the safest thing is not to have a gun in your house, especially a handgun. Never assume you have hidden anything from your children. They are naturally curious. Always lock and store bullets separately from your gun.
Young children can figure out how to load a gun.
Keep a gun lock on your gun after it is unloaded. Gun locks can provide a false sense of security. All it takes is forgetting to lock a gun just one time. Or leaving the key where a child can find it. Always be diligent when using a gun lock.