What Makes the AR-15 Rifle 'America's Gun'?
Tuesday, September 17, 2013 - 16:00
in Biology & Nature
The semiautomatic weapon known as the AR-15 — sometimes referred to by its many fans as "the Black Rifle" — is by some estimates the most-popular rifle in the United States, with an estimated 4 million in circulation. And it's back in the news once again.