Abolishing the Second Amendment would still not abolish the Right, only the enumeration thereof.
It is, and ever has been the natural Right of anyone to defend themselves, others, and even their property with the best means available, and when necessary, lethal force. Ultimately, the means employed to administer that force are merely a detail, but with the consideration that the application of force may be mandated by someone bearing arms of any nature, or simply by overwhelming physical power, the means to meaningfully resist should be denied to no one. Regardless of form, those tools of defense can and must be the best available in order for those with the greatest disparity in physical ability between themselves and the attacker to successfully defend themselves.
Even without the protections of the Second Amendment, the Right to Keep and Bear Arms would fall under the penumbra of the Ninth Amendment, to wit:
The enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people.
...as would the Right to work and feed one's self and family.