Three men have appeared in court charged under the Terrorism Act with having weapons and money for terrorism.
Robert Naylor, 48, Benjamin Wilson, 35, and James Patrick Moloney, 44, were remanded into custody at Bow Street Magistrates' Court in London on Saturday.
They were also charged with conspiracy to possess firearms with intent to endanger life, and possession of two handguns, two silencers and a machine gun.
Mr Wilson, of Carlton Street, Morecambe, Lancashire, and Mr Moloney, of Napier Road, Bradford, West Yorkshire, are also charged with possession of ammunition without a certificate.
Mr Naylor, of Westminster Road, Morecambe, is charged with selling ammunition without being a registered dealer.
The defendants spoke only to confirm their names, ages and addresses during the 45-minute hearing.
They were arrested after police raided premises on an industrial estate in Morecambe on 10 August as part of an investigation into suspected Irish dissident republicans.
Mr Naylor and Mr Wilson were refused bail and Mr Moloney made no application for bail.
All three were remanded in custody to appear before the Old Bailey on 22 August.