Not only that, support for banning hand guns has collapsed: https://news.gallup.com/poll/150341/record-low-favor-handgun.... In 1959, 60% of people favored a handgun ban, to 36% opposed. By 2011 that had flipped to 73% opposed and just 26% in favor.
People focus on rifles, which are responsible for relatively few deaths, because banning handguns is wildly unpopular. (Heck Kamala Harris owns a handgun.)