A federal judge in Texas on Thursday lifted a state ban on people between the ages of 18 and 20 from carrying handguns.
What appears to be the first major judicial decision since a landmark ruling on arms rights by the US Supreme Court in June.
Challenge to Texas statute that prohibits young adults in active military service from holding handguns in public
The 2021 firearms policy was filed by the Coalition, a gun-owners' rights group.
US Supreme Court ruled for the first time that the Second Amendment guarantees an individual the right to carry a weapon in public for self-defense.
The decision ordered the federal judiciary to apply a "history-only" test considering the challenges to the arms regulations, saying a regulation was merely constitutional.
The judge suspended his decision for 30 days to allow Texas to file an appeal.
Finding the ban unconstitutional, Pittman wrote that "indisputable historical evidence establishes that 18 to 20 year olds were considered part of the militia in the founding era."
Lawyers for the Texas Attorney General's office argued unsuccessfully that there was a historical basis for determining who could carry guns based on age.