A Leeds man set up a "gun factory" in his shed which was used to manufacture weapons for gangs.
Police raided Neil McFarlane's Pudsey Road home and found equipment which was being used to make homemade firearms.
It came after nine months of surveillance with police also finding 40 cannabis plants being cultivated in a spare bedroom.
Recovered from a shed were various items that could be used for the manufacture and conversion of firearms with search officers discovering two rifles and ammunition hidden in a hedge.
McFarlane, 53, and his girlfriend Anne Marie Moran, who lived at the same address, were arrested in December 2019 when West Yorkshire Police executed a warrant at the couple’s home address as part of a wider operation with Northumbria Police.
Moran admitted to producing Class B controlled drugs and supplying them from her home with the 39-year-old given a community order.
However, McFarlane, was jailed for 13 years after pleading guilty to two counts of manufacturing a prohibited firearm, the manufacture of a firearm and three counts of possessing ammunition without a firearm certificate.
He also admitted the production of Class B controlled drugs and the supply of Class B controlled drugs from his home.
During his sentencing at Leeds Crown Court on Thursday, July 9, Kate Batty, mitigating for McFarlane, said he was working on behalf of a gang which was "the go-to for firearms in Birmingham".
She said: "It was a sophisticated gang - the leader had two levels beneath him.
"Mr McFarlane was hiding the firearms in bushes by his shed, which was less sophisticated than other members of the gang.
"Surveillance was carried out over nine months and it was felt they were the go-to for firearms for organised crime in Birmingham and further afield."
After McFarlane was jailed for over a decade, Detective Superintendent Carl Galvin, of West Yorkshire Police, said the hefty sentence reflected the severity of his crimes.
He said: "McFarlane had basically set up a firearms and drugs factory in his home
“His imprisonment is the result of excellent intelligence-led policing to disrupt and arrest dangerous criminals through Programme Precision which looks to target serious and organised crime in West Yorkshire.
“McFarlane’s prison sentence reflects the seriousness of his role in this criminal enterprise and the threat to life that his activity caused.”
