HARTFORD (AP) — The families of nine children and adults killed in the 2012 Newtown school shooting are asking a federal judge to return their lawsuit against gunmaker Remington to state court, where legal experts say it may have a better chance of succeeding.

The families and shooting survivor Natalie Hammond say Remington’s Bushmaster AR-15 rifle, used in the killings of 20 children and six adults at Sandy Hook Elementary School, is too deadly to sell to civilians.

The plaintiffs filed a motion on February 13 saying Remington improperly moved the case out of state court. Remington and other defendants say federal court is the proper jurisdiction because they aren’t located in Connecticut.

Legal experts say the 2nd US Circuit Court of Appeals, whose jurisdiction includes Connecticut, has consistently dismissed lawsuits against gunmakers.