News Summary: Doubt over 3-D-printed gun parts

JUMPING THE GUN?: Police in northern England thought they'd made a major discovery when they seized what appeared to be gun parts made on a 3-D printer. But hours later, technology experts said photos released by police appeared to be of parts for the printer itself.

WALKING IT BACK: The police department in greater Manchester subsequently toned down its report, saying detectives were attempting to "establish exactly what these parts can be used for and whether they pose any threat."

THE SIGNIFICANCE: If the gun was viable, it would be the first such seizure in Britain, police said. Authorities worry the technology could allow anyone to manufacture guns that would pass unnoticed through metal detectors.