The Connecticut Supreme Court has agreed to hear a direct appeal by families of victims of the Sandy Hook Elementary School shooting.
Their lawsuit against makers and sellers of the assault rifle used in the 2012 attack was dismissed in October.
On Tuesday Connecticut's highest court said it would consider whether families of nine victims, plus one survivor, can recover damages from Remington Outdoor Co and others.
At issue is the gunman's use of a Bushmaster AR-15 rifle in the attack in Newtown, Connecticut. The attack killed 20 students and six staffers.
In a statement from the families' lawyers, the court's decision to take the case, just two weeks after the families requested it, was announced on Thursday.
Other defendants include the gun's distributor, and the gun shop where Adam Lanza's mother Nancy had bought the AR-15..