No, madam Senator, it is most assuredly not legal to hunt humans in the United States with any capacity ammunition feeding device.
It is, however, completely legal for the citizenry to defend itself (wholly and individually) from violence.
Also, please take a moment to read it again, as ratified in 1788:
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.
A couple of points that are significant:
- “well regulated” means “disciplined” or “trained”
- “militia” refers to the people as a whole — not to the National Guard, which was created in 1903
- “shall not be infringed” does not mean that you can continue to chisel away at it.