The Second Amendment reads: 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.
The security of a free state is often found with State capitalized in older references and in the original.
The special purpose of the Second is to guarantee to the citizenry, each in his or her own capacity the right to fend off armies both foreign amd domestic. You see a direct refernce to that another place in the constitution, in the original Article I. The famous gun case called Miller had court dicta that said arms used for military purposes were protected.
The other rights under the umbrella of the Second; the right to hunt, to a personal form of self-defense, to collect firearms, to engage in shooting sports are also covered, quite adequately, under the Ninth Amendment. Even if the Second did not exist, these ancillary rights under the Second would be covered.
To make a special emphasis, the Second guarantees the citizens the right to maintain war making powers. It is only by that ability can a free State be secure. Do not be misled, duped or worse become an unwitting dupe of the anti-gunners or the well meaning but timid gun supporters who rest their case on self-defense or hunting.