BENSON, AZ - SEPTEMBER 29: Gun shop owner Jeff Binkley displays AR-15 "Sport" rifles at Sarge's Sidearms on September 29, 2016 in Benson, Arizona. He said he redesigned and renamed his store just this year. Gun shops are proliferate in Arizona, which regulates and restricts weapons less than anywhere in the United States. (Photo by John Moore/Getty Images)
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Former agent warned ATF of loophole regarding AR-15
Federal law defines a key gun component as having four elements. A former ATF agent says the AR-15 part only has two.
3:37 • Source: CNN
Politics of the Day 9 videos
BENSON, AZ - SEPTEMBER 29: Gun shop owner Jeff Binkley displays AR-15 "Sport" rifles at Sarge's Sidearms on September 29, 2016 in Benson, Arizona. He said he redesigned and renamed his store just this year. Gun shops are proliferate in Arizona, which regulates and restricts weapons less than anywhere in the United States. (Photo by John Moore/Getty Images)
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Former agent warned ATF of loophole regarding AR-15
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'I’ll be Sen. Mohammed to you, bro': El-Sayed responds to Trump
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Behind the scenes with Kaitlan Collins: Trump holds midterm rallies as approval rating hits new low
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President Donald Trump stops to speak to members of the media as he departs on the South Lawn of the White House on October 23 in Washington, DC.
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Trump doubles down on defense of controversial Ramaswamy ad and repeats attacks against El-Sayed
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Campaign attacks escalate ahead of midterms
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