Polish Man jailed in London 17 years for 3D-Printed Gun in Terror investigation

A 29-year-old man who attempted to manufacture a firearm using a 3D printer has been jailed for 17 years following a counter-terrorism investigation in London.

Robert Adamski, a Polish national living on Lea Bridge Road in east London, was arrested after officers from Counter Terrorism Policing London entered his address and discovered a 3D printer actively producing a gun component.

The part was later identified as a critical element of an FGC-9 Mk2, a 9mm calibre semi-automatic firearm.

Police said Adamski was found with additional printed components, including a magazine capable of holding 25 cartridges, alongside material linked to extreme right-wing ideology.

Analysis of his mobile phone revealed that he had shared extremist documents within a Telegram group, for which he acted as an administrator.

Commander Dominic Murphy, head of Counter Terrorism Policing London, said the case demonstrated the gravity of attempting to manufacture weapons using emerging technology.

He said Adamski was arrested before he could complete a functional firearm and added that investigators found no evidence he intended to target specific communities or the wider public.

However, Murphy warned that creating or possessing 3D-printed firearms, even without plans to use them, is illegal and attracts severe criminal penalties.

Adamski was arrested in the Walthamstow area on 11 July 2024 and his home was searched the following day.

Investigators recovered internet searches focused on 3D-printed guns, a credit history showing the purchase of a 3D printer in June 2024, and a detailed guide saved on his computer on 1 July explaining how to build the FGC-9 Mk2.

Following consultations with specialist firearms experts, the Crown Prosecution Service authorised terrorism and firearms charges, and Adamski was formally charged on 17 July 2024.

After a two-week trial at Woolwich Crown Court, he was convicted of possessing a document for terrorist purposes and four counts of disseminating terrorist publications. He had earlier pleaded guilty to two counts of possessing a prohibited firearm.

On 27 January, Adamski was sentenced at the Old Bailey to a total of 17 years-15 years in prison and two years on licence.

Police urged members of the public to report suspicious activity through the ACT reporting platform or by calling emergency services if there is an immediate threat.