Hundreds turned out at the grand opening of a gun shop just a few miles from the Washington, D.C. city limits on Saturday. The Arlington storefront was packed with people handling a wide variety of firearms, eating breakfast pastries, and talking to the staff of NOVA Armory. The small boutique, which specializes in high-end firearms, opened despite fierce resistance from local anti-gun activists and politicians. The resistance included a protest targeting the gun shop’s opening. The protest was held several blocks away from the store in a local park, and most protestors did not come over to the actual location...