There are plenty of free countries without a First Amendment -- and saying something even vaguely Nazi-like in some of those countries risks criminal penalty. Furthermore, the absolutist interpretation of free speech we commonly associate with the First Amendment (virtually all speech protected, barring speech that causes immediate or imminent harm like threats, fighting words, and CSAM) has only really prevailed since 1969. I mean, immediately after the Bill of Rights was Ratified, Congress passed the Alien and Sedition Acts.
Anyway, I don't believe that owning a firearm without a license and strict government oversight is a right.