10 U.S.C. § 311 : US Code - Section 311: Militia: composition and classes
(b) The classes of the militia are -
(1) the organized militia, which consists of the National Guard
and the Naval Militia; and
(2)
the unorganized militia, which consists of the members of
the militia who are not members of the National Guard or the
Naval Militia.
10 U.S.C. § 311 : US Code - Section 311: Militia: composition and classes
U.S. vs. Miller 1939
Conclusion:
No. The Supreme Court reversed the district court, holding that the Second Amendment does not guarantee an individual the right to keep and bear a sawed- off double barrel shotgun. With Justice James Clark McReynolds writing for the majority, the Court reasoned that because
the possession of a sawed-off double barrel shotgun does not have a reasonable relationship to the preservation or efficiency of a well-regulated militia, the Second Amendment does not protect the possession of such an instrument.
United States v. Miller, U.S. Supreme Court Case Summary & Oral Argument
The signification attributed to the term Militia appears from the debates in the Convention, the history and legislation of Colonies and States, and the writings of approved commentators. These show plainly enough that the Militia comprised all males physically capable of acting in concert for the common defense. 'A body of citizens enrolled for military discipline.' And further,
that ordinarily when called for service these men were expected to appear bearing arms supplied by themselves and of the kind in common use at the time.
U.S. v. Miller, 307 U.S. 174 (1939)
Meaning military grade weapons is a Constitutional right for private citizens to own..