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Pistols, rifles and ammunition are on display at a show in Miami, where Mike Vallone is buying an AR-15, a firearm at the centre of debate on gun control as the weapon of choice of several mass shooters.
Why would the 55-year-old American, who already owns about 50 weapons, want another one?
"Because I choose to own them. I have the constitutional right to own them and I choose to exercise that right," he said on Saturday.
Mr Vallone was visiting the gun show three days after a 19-year-old with an AR-15 massacred 17 people at his former high school in Parkland, about an hour north of Miami.
The semi-automatic rifle was also used to carry out mass shootings in Las Vegas (58 dead), Sutherland Springs, Texas (26 dead) and Newtown, Connecticut (26 dead).
The media "makes it look like it's evil", Mr Vallone said, holding the $600 (Dh2,203) gun he is about to buy. "This does nothing by itself. This takes a human being to take the rifle, point it and shoot someone."
Every mass shooting reveals the deep fissures in American society between those who favour fewer restrictions on guns and gun ownership, and those who demand greater controls. The "right of the people to keep and bear arms" is guaranteed under the US Constitution's Second Amendment, which was adopted in 1791.
"The focus on gun control is an error and it won't stop someone determined to commit crimes," said Mr Vallone, raising a common argument among pro-gun advocates.
"I own guns, I choose to own guns, I choose to carry guns. That's my choice. It's not for everyone, I absolutely agree with that. Everybody needs a background check, I'm having a background check right now," he said, pointing at the gun seller who was looking at a laptop.
In the United States, adults with a clean criminal record can generally buy a gun, as was the case with Nikolas Cruz in Parkland. Regulatory loopholes also allow for some gun sales without background checks.
The issue is deeply political — on one side, the powerful National Rifle Association (NRA) aggressively lobbies politicians to maintain the status quo.
On the other side, advocates for stricter gun controls say a criminal record check is not thorough and often misses red flags that don't rise to the level of criminal charges, such a mental health problems.
The FBI admitted on Friday it received a warning in January from a tipster who said Cruz could be planning a mass shooting but that agents failed to follow up.
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Florida Gun Shows, which holds events in major cities throughout the state every week, opened its Miami show on Saturday.
"Legislation is great to talk about, as long as it doesn't infringe upon your rights," said George Fernandez, a spokesman for the gun show, defending the Second Amendment.
About 140 exhibitors had their weapons on display in booths, many decorated with alligator heads.
One salesman displayed knives made from giraffe bones. Another seller highlighted the advantages of tasers and stun guns: "You don't need to go through the paperwork to carry it, you can just take it."
The queue to enter the exhibition hall was long and made up mostly of men, with some holding small children by the hand.
Meanwhile, student survivors of the school shooting in Parkland rallied in the nearby city of Fort Lauderdale. Brandishing posters with messages such as "Never again" and "Gun control now", they demanded that politicians tackle the issue that surfaces after every mass shooting.
"If the president wants to come up to me and tell me to my face that it was a terrible tragedy and … how nothing is going to be done about it, I'm going to happily ask him how much money he received from the National Rifle Association," 18-year-old student Emma Gonzalez said in an impassioned address to several thousand people.