Earlier quoted context omitted.
At the level of simple firearms, arms are arms. You're going to have to argue 2A regardless.
I don't understand this response. Why wouldn't banning the sale of ammunition and ammunition components not work to stop most of the bad problems of guns? A gun is still arms even if it does not have ammunition so this avoids the constitutional problems, but it makes them much safer. I should add that I am not arguing for the banning of ammunition, just why has this not been used as an attack vector on the gun lobby?
On the flip side, my first argument 2A, so now the burden is back on you.