A legal challenge to California’s controversial microstamping law that has effectively outlawed the commercial sale of new semi-auto handgun models in the state is being sent to the nation’s high court. The microstamping mandate, part of California’s Unsafe Handgun Act, was upheld by a 2-1 panel of the U.S. 9th Circuit Court of Appeals last August in the case of Pena v. Lindley. The lawsuit’s plaintiffs — Ivan Pena, Dona Croston, Roy Vargas, and Brett Thomas — stress they are unable to buy the majority of popular new semi-auto handguns from such companies as Smith & Wesson, Ruger and Glocks...