Kids and Guns

My son and I have been addicted with NERF guns these days. He would use 2 Nerf pistols and I would use the Long arm Nerf with scopes. When he was younger, we never bought him toy guns or any toy that would instill the idea of violence in him. He started using toy guns when his grandfather bought him is 1^st Nerf gun as a gift. Now he owns three Nerf guns. I would constantly remind him that these toy guns are just toys and that playing with them is OK as long as he would not toy around with real guns or those that could inflict any kind of injuries.