U.S. appeals court ruling upheld by a three-judge panel on Monday.
The U.N. General Assembly voted unanimously to lift restrictions on advertising of weapons and ammunition, paving the way for the U.K. and other countries to sell their own versions of the controversial weapon of choice.
In a separate development, a U.C. Berkeley law professor says he will file a lawsuit challenging a California law that requires gun dealers to keep records of every gun sold.
In California, Gov.
Jerry Brown signed a bill last week that requires every firearm sold in the state to be registered and that every firearm must be shipped in a box.
California gun dealers can face fines of up to $5,000 and prison terms of up 20 years if they do not comply.
Lawyers for Brown said the law was intended to help keep guns out of the hands of criminals and to keep them out of dangerous hands.
The law does not require guns to be listed on the back of the firearms or be stored in locked boxes, and it does not include a list of the ammunition that can be purchased with the guns.
Lawmakers in Arizona and Connecticut are also considering bills that would require sellers of assault rifles, rifles and shotguns to keep a list or a listing of the bullets they can sell.
A judge in Pennsylvania has issued a preliminary injunction blocking an assault rifle law that was proposed in the Republican-controlled House and approved by the Democratic-controlled Senate.
The Justice Department on Monday asked a federal appeals court in Washington to uphold a lower court ruling that blocked the Pennsylvania law.
That ruling came after a judge in the same court in January said Pennsylvania could continue enforcing the law because the state did not meet a requirement for it to be uniform.
Federal gun laws are governed by the federal Firearms Safety Act, which makes it a federal crime to sell a firearm without the proper paperwork.
The Federal Bureau of Investigation said in its brief that the Justice Department had failed to make its case that Pennsylvania’s law violated the Second Amendment.