Frank Femia runs Klubfunstore Guns and Ammo in Henrietta, where the popular ammunition this season is copper bullets. “It’s been hard finding them because everyone’s been sold out of them and it’s been hard to keep in stock,” Femia said.
The National Rifle Association has called the AR-15 the "most popular rifle in America" and estimates Americans own more than 8 million of them. The NRA says the gun is popular because it's "customizable, adaptable, reliable and accurate." Those features may also explain why it's also become a weapon of choice for mass shootings.