What Billy and the democrats fail to understand is the term "well-regulated" means the people have the training, the ammunitions, and spare parts for a properly functioning weapon. That the government has no legal authority to limit that by taxation or regulation. SHALL NOT BE INFIRNGED means the government can take no action to disarm the people or make it difficult for them to protect themselves.
Ammunition regulations, magazine regulations, none of that should be impacted by governmental regulations.