Reial Phillips, linked to Birmingham's Burger Bar gang, was "at the heart" of the shootings, targeting rival members of the Johnson Crew, police said.
At Birmingham Crown Court he admitted firearms offences and conspiring to sell cocaine and heroin.
Police said his actions "brought fear" to people in the West Midlands.
Ashai Gray, 22, from Tanacetum Drive in Walsall, also admitted conspiracy to supply cocaine and heroin and was sentenced to nine years in jail.
More updates on this story and others in Birmingham and the Black Country
Both men were among 18 the BBC named in March when they were banned from parts of Birmingham for what police then said were their links to "gun or gang crime".
West Midlands Police said 20-year-old Phillips, of Musgrave Road, Winson Green, and Gray were believed to be the "armed response" faction of the Burger Bar gang.
The shootings occurred over several months last year and escalated when members of the rivals groups uploaded rap videos online to taunt one another, the spokesman said.
Det Supt Mark Payne said: "For a period of time last year these men and their associates brought fear to the people of the West Midlands through their actions."
The two gangs took their names from two cafes in Handsworth where black youths congregated in the late 80s and early 90s.
Shootings timeline:

They started arriving at Poldhu Cove on Sunday, and National Trust volunteers have been clearing them away as they think it could be dangerous for wildlife.
The bottles are sealed closed, but it's thought that some may have leaked.
The National Trust said it thinks a container had gone overboard from a ship during stormy weather.
Other nearby coves including Gunwalloe, Polurrian and Marazion have also been affected, conservationists said.
Members of the public have been told to keep small children and dogs a safe distance away, whilst the clean up continues.
Justin Whitehouse, from the National Trust, said: "The main worry is all that detergent going into our beautiful marine environment, but thankfully most are full."

The Rt Rev James Jones, who chaired the Hillsborough Independent Panel, said he felt "great pride" in being recognised in the Queen's New Year Honours list.
Author Phil Scraton, who led the panel's research team, turned down an OBE in protest at those he said had not helped the 1989 disaster's survivors.
Meanwhile, Merseyside Police's only Sikh officer has been appointed MBE.
And Liverpool comedy legend Ken Dodd, 89, has been awarded a knighthood for services to entertainment and charity.
Bishop Jones, now assistant bishop in the Diocese of York, said his pride was "mixed with sadness" because of "that enduring sadness of the families who have continued to feel the loss of their loved ones at Hillsborough".
He continued: "I got to know the families very well during the Hillsborough Independent Panel process. And over the years I've come to understand something of their pain.
"I think the families have shown extraordinary forbearance over the years as they have struggled to get people just to listen to them.
"So, in receiving this honour, I also salute their forbearance."
He said the panel's work was the "climax of my ministry as the Bishop of Liverpool".
It was the panel's report that led to the quashing of the original inquests and the setting up of new inquests which ultimately led to the unlawful killing verdict for 96 football fans who perished in the tragedy.
Merseyside Police's Det Insp Sarbjit Kaur was awarded her honour for work in exposing honour-based violence and forced marriages.
The 43-year-old said she was "extremely humbled".
"I believe everyone has the right to live their life free from abuse and have the freedom to choose whomever they want to marry," she said.
The force's Chief Constable Andy Cooke praised Det Insp Kaur's work and said she was "an amazing role model".
He added he hoped she would "encourage women from a similar background to join the police service and protect those most vulnerable in our communities".

Powys council said the latest phase of work in Talgarth to help protect 19 properties was due to start in March.
However, they say a single objection has delayed the process which has resulted in funding being lost.
Councillor John Brunt said: "We are extremely disappointed and are actively seeking a resolution to the objection."
A man has been jailed for 27 years after seven people were injured in a series of shootings during a feud between rival gangs.
[NEXT_CONCEPT]
Thousands of bright pink plastic detergent bottles have washed up on beaches in Cornwall.
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The former Bishop of Liverpool has been made a Knight Commander for his services to the Hillsborough Inquiry.
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Work on flood protection in Powys has been stopped due to an objector to the scheme.