It's now no fun if I gotta 'splayn it.
The typical lefty drivel about living documents, Constitutionalists are actually terrorists, originalist doctrine is bad.
Your quote indicates founder's support for an armed populace and the 2nd amendment as a bulwark against tyranny. And that Congress should be empowered to declare that citizens should HAVE a war-ready rifle of some specific make/caliber/etc.