Two men who made "James Bond-style" guns in east London lock-ups have been jailed for a total of 23 years.
Paul Coke, 40, of Ilford, Essex, and Fatmir Kadena, 26, of Waltham Forest, east London, produced "lethal" guns hidden in both a pen and key ring.
They were found guilty at Snaresbrook Crown Court of conspiracy to possess firearms and ammunition with intent to enable others to endanger life.
Coke was jailed for 14 years while Kadena was imprisoned for nine years.
The lock-ups, in Leyton, were disguised as a makeshift nightclub and car garage.
But in reality they were used to convert imitation and blank-firing guns into lethal weapons that sold for up to £1,000.
Police monitoring the gun factory captured Coke on CCTV concealing a gun in a pool table.
'Dangerous and ruthless'
A total of nine guns were seized by police during a raid in May 2009.
The pen and key-ring guns were both capable of firing ammunition, police said.
Det Con Dan Bryant said: "This was a highly-organised operation whereby Coke and Kadena were converting and modifying firearms, doubtless with the sole intention of selling them on to those intent on committing serious crime.
"They were dangerous and ruthless individuals, content in the knowledge they were producing deadly weapons in order to line their own pockets."