The Supreme Court on Monday agreed to hear a case stemming from a disputed regulation of so-called "ghost guns."

The big picture: The Biden administration appealed a lower court ruling that invalidated its attempt to regulate the firearms, which are typically self-assembled and do not have serial numbers, making them difficult to trace.

• The Supreme Court temporarily stayed the lower court ruling last summer.
• The court will take up the case, Garland v. VanDerStok, in its next term, per ABC News.

Catch up quick: The Biden administration's 2022 regulation changed the definition of a firearm to include unfinished gun parts, like frames and receivers.

• Firearm parts, under the rule, would be required to have serial numbers.
• Dealers selling these parts would have to perform background checks on potential buyers.

State of play: Ghost guns can become fully functioning, untraceable firearms in less than one hour, per Everytown for Gun Safety.

• The Biden administration regulation applies to ghost guns made from individual parts, by kits or by 3D printers.
• In 2022, the Justice Department recovered more than 25,700 ghost guns in domestic seizures and more than 2,400 through international operations.

Editor's note: This story has been updated with details throughout.