Read our Privacy noticeA federal judge in Texas on Wednesday struck down a 1930s law that imposed regulations on firearm suppressors and guns that are considered the most dangerous, more than a year after President Donald Trump signed a bill eliminating taxes on those items. The ruling could allow firearm owners to purchase firearm suppressors — known as silencers — short-barreled rifles, short-barreled shotguns and other certain firearms without registration, while also removing a layer of background checks. The regulations are required under the National Firearms Act, passed in the 1930s in response to concerns about mafia violence. The National Firearms Act has been in effect since 1934 and establishes key differences and regulates firearms considered the most dangerous. In June, the number of registered firearm suppressors in the U.S. was more than 6.4 million, according to the ATF.