Rep. Eric Swalwell, D-Calif., says he is getting death threats from people angry at the gun control legislation he has backed.

In a tweeted recording of a voicemail he says he received from an unknown caller, a man's voice can be heard saying: "Eric Swalwell, here's a little ditty for ya. Pop pop pop pop pop pop pop, 30-round clip, you're all gonna drop."

The man then continues in a profanity-laced tirade, saying "We're going to war. And you're gonna be the first [expletive] casualty."

In the tweet, Swalwell wrote: "I'm not afraid of this guy. I'm not afraid of the NRA I'm not afraid. No fear."

Swalwell was one of the backers of a House bill to require universal background checks on gun purchases. He also backed a bill he said would make it tougher for domestic abusers to get their hands on guns.

According to Politico, Swalwell is ready to run for the presidency, having been overheard at a fundraiser last week saying "Don't tell anybody, but I'm announcing in two weeks."