Burr's tweet is in response to comments Biden made in an interview in Field & Stream magazine. In that interview Biden recounted how he told someone that a shotgun is better for protection than an automatic weapon.

"I did one of these town-hall meetings on the Internet and one guy said, "Well, what happens when the end days come? What happens when there’s the earthquake? I live in California, and I have to protect myself," Biden said in the interview. "I said, 'Well, you know, my shotgun will do better for you than your AR-15, because you want to keep someone away from your house, just fire the shotgun through the door.' "

Burr disagreed.

Biden's interview with Field & Stream focused on gun safety and possible new gun control laws.

The Obama administration and a number of legislators have called for federal action on gun violence in response to a shooting massacre in December at Sandy Hook Elementary School in Newtown, Conn., that resulted in 27 dead. President Obama has called for a reinstitution of the federal assault weapons ban that expired in 2004.