Police have seized what could be parts for a firearm produced by a 3D printer - the first of its kind in the country.
Component parts were seized in Greater Manchester's biggest ever crack down on organised crime.
Police fear the new technology could allow criminals to produce the next generation of weapons in their own homes. More than fifty arrests have been made in a week of undercover raids.
Chief Superintendent Rebekah Sutcliffe is from Greater Manchester Police:
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