A ruling by the US Supreme Court has upended a longstanding legal roadblock that has given the gun industry immunity from lawsuits in the aftermath of mass killings.
The court has allowed families of the victims of the 2012 Sandy Hook school massacre to sue the maker of the AR-15 used in the attack.
The case against Remington will now proceed in the Connecticut courts.
Remington is widely expected to win, but critics of the gun industry are eyeing what they see as a significant outcome: getting the gunmaker to open its books about how it markets firearms.
Plaintiffs allege Remington purposely used advertisements that targeted younger, at-risk males, such as "Consider Your Man Card Reissued".