This quote is a great take away...
"Much of the modern argument over gun control revolves around the effort to label certain kinds of semi-automatic rifles (and magazines over ten rounds) as “military style” weapons that are effectively unprotected by the Second Amendment. Yet the Ninth Circuit’s language — rooted in the history of the amendment — links constitutional protection to a weapon’s potential militia use. In other words, the “military style” moniker actually connects the guns in question to the historic purpose of the right to bear arms."