Whether the Second Amendment guarantees an individual who has been convicted of a felony offense the unencumbered right to possess firearms

Whether the Second Amendment guarantees an individual who has been convicted of a felony offense the unencumbered right to possess firearms, or on a case by case basis, or not at all, or does the language “the right of the people to keep and bear arms, shall not be infringed”, mean that the right itself is unequivocal and pre-existing for all persons, and the protection provided is not to guarantee the right, but to prevent infringement on that right. li