Simply owning a gun is it's own best use. Each year millions of crimes are prevented simply by the presence of a gun. The Bureau of Justice states that you have a 1-in-4 chance of being involved in a violent crime during your lifetime. So, in order to protect yourself, your family, and your property, you must own a gun. But ownership without proficiency is the same as owning a toaster. smith and wesson model 66 combat magnum for sale