There were two issues addressed by the US Constitution's 2nd amendment. The first sentence had to do with private rights to bear arms. Every household was considered a sovereign government with rights of self-protection. The second was state militias. The tenth amendment is useless if states did not have the right to keep militias to defend themselves against the possibility of federal government tyranny. Our Constituion was not the constitution for a central government, but for a national government that stood within a matrix of self-ruling entities including privately owned estates, states, religious institutions and the newly organized federal government meant to have sovereignty in a defined and very limited fashion.