In Florida, buying one is no problem as long as you're 18, a legal resident of the United States, aren't a felon or a domestic abuser and have no documented mental health or substance abuse issues.
Here are the state's basic rules:
— All firearm purchases from federally licensed dealers require a background check, regardless of whether the buyer has a concealed weapons permit.
— There is no waiting period to buy a rifle. There is a three-day waiting period to buy a handgun, and handgun buyers must be 21 or older.
— People charged with or convicted of a felony can't buy guns. Neither can people who have been convicted of two or more DUIs, have been involuntarily committed to a mental health hospital or have a restraining order against them.
Whether Florida gets its gun laws right depends on the perspective. Brian Malte, the national policy director for the Brady Campaign, said getting a gun is far too easy in Florida and private sales don't require a background check.
"The corporate gun lobby seems to use Florida as their example, and unfortunately we've seen what that example has produced, including George Zimmerman, who had a history of violence and an arrest record and yet was able to carry a concealed gun," Malte said, referring to the neighborhood watch volunteer who fatally shot unarmed teenager Trayvon Martin in 2012. "Florida is certainly no shining example of gun laws."
But former Florida Department of Law Enforcement Commissioner Gerald Bailey believes the state gets it right. He ran the agency that conducts background checks for gun purchases.
"I've had an opportunity to look at what a lot of states are doing. Florida is ahead of the pack with what they're doing with firearms," Bailey said. "It works as well in Florida as it does anywhere else."
Of course, some of the disqualifiers, like mental health and substance abuse, would have to be self-reported if there's no record of the problem.
Bailey said people can't be denied a gun just because other people think they're mentally ill. "Not in a free society," he said. "There has to be some sort of determination that that person is mentally incompetent."
Florida also requires training and a background check before someone can get a license to carry a gun in public. But very few people are denied.
There are about 1.6 million concealed weapons permit holders. In the past 19 years, only 24,713 applications have been denied, and 17,557 of those were because the application wasn't filled out properly, not necessarily because the applicant didn't qualify.
Former U.S. Agriculture Commissioner Charlie Bronson, who ran the agency that issues the permits, doesn't believe gun laws need to be changed. He said assault rifles like the AR-15 Omar Mateen used in the Orlando attacks also are used for legitimate purposes.
"People use AR-15s to hunt deer, to hunt hogs, to hunt all kinds of game," he said. "Think of the over 1 million people that have them and have never misused them, and they want to do away with certain aspects of the gun permitting or buying weapons because of one person's lawlessness."
Mateen bought his gun legally at the St. Lucie Shooting Center. Owner Ed Henson declined to discuss the sale to Mateen, who was killed in a shootout with police.
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