FILE - In this Jan. 28, 2013, file photo, firearms training unit Detective Barbara J. Mattson, of the Connecticut State Police, holds up a Bushmaster AR-15 rifle, the same make and model of gun used by Adam Lanza in the Sandy Hook School shooting, during a hearing of a legislative subcommittee, at the Legislative Office Building in Hartford, Conn. A judge on Friday, Oct. 14, 2016 dismissed a wrongful-death lawsuit by Newtown families against the maker of the rifle used in the Sandy Hook Elementary School shooting massacre, citing an embattled federal law that shields gun manufacturers from most lawsuits over criminal use of their products. (AP Photo/Jessica Hill, File)

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