http://nuclearcdboxafziza4mgohcwhzfjiyg6zeslnry33pepsgtur2wyeyd.onion/social/2.html
Asymmetric warfare becomes necessary, and some parts of that don't even need conventional weapons - one could probably kill their local nazis just with tact and rat poison.
Also, homemade and 3D printed firearms exist (even if their illegality presents challenges if the state has the power to arrest you). I haven't looked into it but I've heard 3D printed firearms are more and more reliable as materials improve.