Silly strawman...If a gun existed that could jump a fence on it's own and kill 15 people in one year it would be banned quickly.
Same logic used in the clinton assault weapons ban. Some guns are inherently evil and do evil things just like pit bulls, so we need to ban them and restrict their possession by people who've owned them their entire lives and who have safeguarded them so as that they have never caused so much as a scratch to another human being.