Ammunition is "Arms" just like knives and swords are arms.
Second amendment still applies.
/johnny
I concur. Heller establishes the principle that the Second Amendment protects the right to keep and bear a weapon that is usable as a weapon for a lawful purpose, such as home defense. If you technically own a weapon but are denied the right to use it as a weapon, through such burdens as excessive security measures (the Heller scenario), or selective taxation, or targeted denial of supplies and components, the Second Amendment has indeed been violated, your right to self-defense infringed, and any proposed law or other governmental directive that systematically has that effect would be a nullity as self-evidently contrary to the Constitution.