A serving British Army soldier has been found guilty of passing on military-issue bullets.
Ralstan Pusey, of Norfolk, was found guilty of possession of prohibited ammunition after a three-day trial at Kingston Crown Court.
The 31-year-old, a Lance Corporal with 1st The Queen's Dragoon Guards, will be sentenced at the same court next month.
On 9 November 2016, officers stopped a vehicle in Luton and recovered a loaded handgun and 97 rounds of 9mm Parabellum ammunition.
The driver of the car was arrested and convicted of possession of a firearm and ammunition. He was sentenced to six years in prison in June 2017.
The bullets were found in two containers - one an iPhone box.
Police made enquiries about the IMEI (International Mobile Equipment Identity) number on the iPhone box and found it was linked to Mr Pusey.
The Metropolitan Police said the ammunition and the boxes were forensically tested and Mr Pusey's fingerprints were found on the containers.
Detectives discovered the rounds of ammunition came from a batch that was manufactured for the British military in July 2010.
Eleven thousand rounds of ammunition from the batch were sent to Germany in September 2013 and February 2014.
The court heard that it was believed Mr Pusey had obtained the ammunition while taking part in firing range exercises in Germany.
Detective Constable Leon Ure said: "This was an unusual case which opened up as the result of meticulous forensic work.
"Officers were able to narrow down the source of the bullets to the British Army, and a jury was convinced that it was Pusey who had passed the bullets on.
"Possessing ammunition is a very serious offence – criminals intent on using firearms to commit violence on London’s streets provide a black market for ammunition, to be used in shootings linked to gang violence and organised crime."
Mr Pusey was found not guilty of theft.
Cover Image: Ralstan Pusey (Picture: Metropolitan Police).