One I wouldn't trust pre school age children in general to listen anything of a serious nature. The video might as well leave them alone near a street and see if any of them chase a ball in front of a moving car. And second an unloaded firearm is an unloaded firearm. I mean the shotgun on the top self... I mean how many unlikely steps would a child of that size have to accomplish to discharge it. Find gun. Get gun. Find ammo. Get ammo. Depress the pump lock and pull pump back. Ammo in. Pump forward. Pull trigger. Kids that young don't even have the strength to work the action on many guns. How many four year olds could get the pump action open? Pull the slide back on a pistol?