@Peartown98 : Leaving a weapon unsecured, and telling the kids to leave it alone is the most certain way to encourage a kid to find and handle a weapon without an adult present. The omnipresent violence on tv and letting them play these first person shooter games doesn't help.
My dad had me handling firearms at the age of four. He saw my interest and he let me hold them and look at them. He kept the weapons secured when he wasn't around and he told me that I could handle the weapons only with him. Later, as he taught me to shoot, he taught me the safety rules first, and then the techniques of shooting. Safety was discussed before each outing, even as I became older. Hunting and target practice was something we did together almost our entire life together, though by the age of nine, I was responsible enough to go hunting on my own.
If you keep weapons, don't make them mysterious to your kids, and don't glorify their use by playing first-person shooter games in front of them. It cheapens their view of the sanctity of life. Keep the weapons secured at all times, and teach them how to handle them and respect them.