Gun control supporters are wrong to claim that “assault weapons” are used in most mass shootings. While the media focus on this false narrative, mass killings have been committed with firearms of all types, and without firearms of any type.Second Amendment – Firearms that gun control supporters call “assault weapons” and ammunition magazines that they call “large” are among the arms protected by the Second Amendment. Because they’re among the arms that are most useful for the entire range of defensive purposes, they’re “in common use” for defensive purposes, a standard articulated by the Supreme Court in District of Columbia v. Heller (2008).