Eugene Volokh has pointed out some factual errors in the State Department's publication entitled Rights of the People: Individual Freedom & The Bill of Rights. As you might have guessed the errors Prof. Volokh discusses occur in the chapter entitled The Right to Bear Arms.
Now to be fair there was a government publication that did a better job of discussing the Second Amendment & the Right to Arms. It was published a while back & is known as The Right to Bear Arms: Report of the Subcommittee on the Constitution of the U.S. Senate 97th Congress Second Sessions February 1982. Unfortunately no one in government has been able to find & read a copy of it since it was written.
But go read Prof. Volokh's post to see what kind of quality work you can expect for your tax dollars.