You’re probably thinking of Switzerland and they can’t own personal ammunition.

As for the rest of your point, the second amendment is the hot button because those who want to take away the fundamental right to own arms are basically saying that rights are affordable. That’s not how they work. As someone in this thread said, the bill of rights do not grant you these rights, they already existed and the bill is acknowledging them. IE, under no circumstances does the government have any capability or authority to deny or revoke it under any guise. The very concept of the people for the people would be erased otherwise.

If the culture of America legitimately swung overwhelmingly in favor of handing in their arms (never going to happen) cosmopolitanism tells us that is fine and good. If the government decides for you that everyone is in agreement, that is a spit in the face of liberty and a complete fabrication of their ability to revoke rights (which as stated they don’t have).