A federal judge has agreed to further delay a class-action settlement involving some 7.5 million allegedly defective Remington rifles, after the parties in the case said they need more time to develop a better plan to alert the public.

United States District Judge Ortrie Smith in Missouri put the case on hold last month, hours after CNBC published a new investigation into allegations that Remington's popular Model 700 rifle contains a design defect that allows it to fire without the trigger being pulled.