Citing gun restrictions dating to the Reconstruction era, a federal appeals court upheld a 2018 Florida law that prevents sales of rifles and other long guns to people under age 21.

The law, passed in the aftermath of the mass shooting at Parkland's Marjory Stoneman Douglas High School, is one of the only firearm restrictions approved by the Legislature in decades. Federal law already prohibited the sale of handguns to people under 21.

Lawmakers passed the measure weeks after Nikolas Cruz, who was 19 at the time, used an AR-15 rifle to kill 17 students and staff members and injure 17 others at the Broward County school.

The National Rifle Association quickly filed a federal lawsuit, arguing in part that the law imposes an unconstitutional restriction on the Second Amendment rights of people under 21.

Chief U.S. District Judge Mark Walker rejected the challenge in 2021, ruling that previous court opinions have given states leeway to impose Second Amendment restrictions in some instances. The NRA appealed, and a three-judge panel of the U.S. Court of Appeals for the Eleventh Circuit heard arguments last year.

The decision relied heavily on guidance from the 2022 U.S. Supreme Court opinion New York State Rifle & Pistol Association v. Bruen, which said gun laws must be "consistent with this nation's historical tradition of firearm regulation."

The history shows Florida's 2018 law is consistent with such tradition, Judge Robin Rosenbaum wrote in an opinion joined fully by Judge Anne Conway. Judge Charles Wilson wrote a short concurring opinion.

The ruling mapped out the historical record on age restrictions since the Reconstruction era. It also said the Florida law allows people under 21 to possess or use guns, such as guns that they receive as gifts.

"To begin with, the act is no more restrictive than its forebearers: While the act burdens 18-to-20-year-olds' rights to buy firearms, unlike its Reconstruction era analogues, it still leaves 18-to-20-year-olds free to acquire any type of firearm — including 'the quintessential self-defense weapon,' the handgun … in legal ways, as long as they don't buy the weapons," Rosenbaum wrote.

In the mid-1800s, Rosenbaum wrote, Alabama and Tennessee laws prohibited selling, loaning or giving guns to people under 21, which was the age of majority in both states at the time. A similar law passed by Kentucky in 1859 included an exception allowing parents to give deadly weapons to their children.

The Alabama and Tennessee laws imposed "a greater burden on the right to keep and bear arms than does the [Florida] act, which leaves 18-to-20-year-olds free to obtain firearms through legal means other than purchasing," Rosenbaum wrote.

The Kentucky law and the Florida law both "provide pathways" to acquire weapons, Rosenbaum, who was appointed to the appeals court by former President Barack Obama, added.

"As for the 'why' of those historical regulations, it is also 'relevantly similar' to the 'why' of the Marjory Stoneman Douglas High School Public Safety Act [the 2018 law]. Both 'regulations burden a law-abiding citizen's right to armed self-defense' for the same reason: enhancing public safety," the 40-page ruling said. The Florida law also aims to enhance public safety by addressing gun violence at schools, a goal "that is well in keeping with traditional firearm regulations," Rosenbaum wrote.

The NRA has argued, in part, that the age restriction infringes on Second Amendment rights of young adults who have been authorized to use weapons when they serve in the military or in law enforcement.

The NRA "is currently assessing our appeal options" and is disappointed in the decision, spokeswoman Amy Hunter said in an email.

"The NRA supports the right of law-abiding adults to possess firearms for self-defense, hunting and sport shooting. There is no reason why an adult who is old enough to defend his or her country should be restricted from exercising their Second Amendment rights," Hunter said. "The NRA also looks forward to the Florida Legislature addressing the issue and removing this unconstitutional ban."

The panel of the Atlanta-based appeals court disagreed with the NRA's arguments related to people under 21 being able to use guns in the military or in law enforcement.

"The NRA's conclusion is incorrect. The NRA mistakes a legal obligation for a right," Rosenbaum wrote.

The ruling came days after two Republican House members filed a bill (HB 1543) that would remove the age restriction. Hunter's email pointed to the bill, which Wilson also addressed in a concurring opinion.

Wilson agreed "with the judgment given the law as it stands today," but said he would have waited until the end of the legislative session before issuing a ruling because passage of the bill "may render the issue moot."

But in a lengthy footnote, the main opinion said the case "remains very much alive." State lawmakers might not pass the bill, and the parties in the lawsuit, filed five years ago, submitted briefs before and after the Bruen ruling.

"Given these circumstances — the speculative nature of any possible mootness scenario and the fact that neither party has asked us to wait to see whether any mootness potentiality materializes — we think we should resolve the parties' disagreement without further delay," Rosenbaum wrote.

Dara Kam reports for the News Service of Florida.

Copyright 2023 News Service of Florida. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.