From The Truth About Guns:

With more and more states passing restrictions on the very sorts of common firearms that would be most suitable for repelling efforts to overthrow our constitutional republic, a renewed focus on this core purpose of the Second Amendment is overdue. This article aims to bring renewed attention to the overwhelming amount of founding-era and 19th century commentary that emphasizes the importance of the Second Amendment right as a tool to resist tyranny. In light of this clear history, so-called “assault weapon” bans and similar laws are incompatible with our historical tradition and should be struck down.