A man has been charged with possession of a sub machine gun as part of an investigation by counter-terrorism detectives, Scotland Yard said.
Mohamed Elyasse Taleouine, 20, from Edgware, north London, will appear at Westminster Magistrates' Court this afternoon charged with possessing the gun and bullets.
Scotland Yard said it is alleged that on January 10 he had a Mac-10 style sub machine gun and 24 live 9mm cartridges.
Taleouine was arrested on January 10 by officers investigating alleged support for travel overseas for terrorism, and today he was charged with the two firearms counts but no terrorism offences.
He was held with another man, aged 37, outside a business in west London. The second man was released without charge yesterday.