Saying the restriction is “consistent with our historical tradition of firearm regulation,” a federal appeals court on Friday upheld the constitutionality of a Florida law that raised the minimum age to purchase rifles and other long guns from 18 to 21.

The 8-4 ruling by the 11th U.S. Circuit Court of Appeals came after seven years of legal wrangling in the National Rifle Association’s challenge to a 2018 law passed after a mass shooting at Parkland’s Marjory Stoneman Douglas High School that killed 17 students and faculty members.

A federal appeals court on Friday upheld the constitutionality of a Florida law that raised the minimum age to purchase rifles and other long guns from 18 to 21.