Something can be done about it as long as it actually "does" something about it and that means engaging the legal, practical and political merits of proposed policies. 

So for instance, banning bump stocks would probably be supported by the majority of Americans. States with political mandates can and have implemented stricter gun control.  

You could also argue what is needed is some conservative solutions like less gun free zones and opening up more spaces to guns  (shock horror but is carries more statistical weight than many gun control arguments). Or addressing policing, law and order issues and strengthening families and spiritual institutions etc etc...(Talking gun deaths they are higher for suicides, urban crime and family violence than mass shootings).