So you believe we only have those civil rights the court has specifically enumerated?
Heller lays all kinds of blueprints for future challenges, and lower courts have to at least consider the possibilities.
Put another way: having established in Heller that we have a personal civil right to KEEP arms (loaded) for personal defense, how could a lower court separate out the right to BEAR arms? They would literally have to manufacture a disconnect between "keep" and "bear" when no such disconnect has even been theorized in law review articles.