(Heath Druzin / Boise State Public Radio)

The Guns & America series looks at the popularity of the AR-15 semi-automatic rifle. The firearm's name and design are licensed to numerous manufacturers and can be customized with a plethora of attachments, making it one of the top-selling rifles in America. Heath Druzin, Boise State Public Radio's Guns & America reporter, joins Idaho Matters to parse out the popularity of this gun.