As I’ve noted in several previous posts, many reactionaries view guns, not as objects, but as symbols of independence, strength, virility, and traditional values. Almost as icons, you could say. That makes it difficult to have even a reasonable conversation about regulating them, much less to get legislation through the system, even though every poll I’ve ever seen shows strong national support for controls at a national level.
The Realo position on guns is to support additional controls, but at a state and local level. Bernie Sanders has historically been a Realo on this issue; he views gun control as an unwelcome distraction from the “revolution,” which is directed at Wall Street, not serial killers. The Fundi position, of course, is to promote the strictest regime possible at the federal level. In spite of a wave of massacres over the last decade, it has accomplished essentially nothing.
Barring the abolition of the filibuster or a huge blue wave election, there is no prospect of any really meaningful action on guns in Congress in the foreseeable future. Nevertheless, you can expect the Fundi position to prevail during the primaries, due to the strong emotions understandably raised by the issue, and the Democrats’ chances of winning the Senate to diminish as a result.