HARRISBURG, Pa. - The Pennsylvania State Police have updated the way gun dealers have to perform background checks for selling so-called "ghost gun" frames.

Officials said dealers can no longer use the online background check system.

Instead, dealers have to call the state police office that manages that system to get approval to sell the frames.

The change comes after Attorney General Josh Shapiro issued a legal opinion that "ghost guns" are firearms under state law.

According to the Bureau of Alcohol, Tobacco Firearms and Explosives, they are made from receiver blanks. They are also referred to as 80 percent receivers. Someone could purchase them to make a functioning firearm.

Businesses in Pennsylvania that manufacture frames filed a lawsuit in December against Shapiro. It stated that Shapiro's opinion does not give fair notice to people regarding what is legal and what is not.

Shapiro indicated that the goal is to keep firearms away from people who cannot legally own a gun.

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