The AR-15 Is More Than a Gun. It's a Gadget | Danger Room | Wired.com

In the past two decades, the AR-15 has evolved into an open, modular gun platform that’s infinitely hackable and accessorizable. With only a few simple tools and no gunsmithing expertise, an AR-15 can be heavily modified, or even assembled from scratch, from widely available parts to suit the fancy and fantasy of each individual user. In this respect, the AR-15 is the world’s first “maker” gun, and this is why its appeal extends well beyond the military enthusiasts that many anti-gun types presume make up its core demographic.