We're passionate about our rights, but there are maybe 2 million people with black rifles in the US, and a good share of them are the "I can have one,but no one else should be able to have one" types.
The number of MG owners is probably some tiny figure in the 50,000 range or so.
There are MILLIONS of illegals and MILLIONS more of their supporters. They have the sympathy of the press, half of the nation,and the most of the rest of the world (if only for making us look foolish). We have the sympathy of our friends and maybe some of our relatives,and probably a good share of them think we are extemists if we want,say legalization of new manufactured machineguns. Any civil disobedience by us would see us arrested and demonized. There would be no sympathetic cameras or newspeople for us,and no mass of citizens who supported us. That makes all the difference.