Time for gun owners to march on Washington, preferably wearing Gadsden flags.
I would prefer carrying Gadsden flags and peaceably carrying our weapons. Virginia is an open carry state. DC is not. Maryland is not. We assemble in VA and march to the border of DC. We open a second front on the PA and MD border. PA is an open carry state. There are over a million hunters in PA, which would mean there are well over a million people who have weapons. That is larger than Russia's active military.
Obviously, the logistics for such a march is immense. But it would be a very persuasive. :)