....Have you ever thought critically about what "A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed." actually means..?
It's not a plaintext right to manufacture firearms, yes. It is, however, an --implied-- right. In order to keep and bear arms, citizens must also obviously have the right to -make- their own arms.
In fact, there have already been court cases on this very issue in other states. Defense Distributed v. Blanche, comes to mind, though there may have been others.