A man gunned down by his mom during a fight outside their Brooklyn home gasped to arriving cops, “My mother shot me, I’m dying” — and has now succumbed to his wounds, police said Tuesday.

Christopher Jenkins, 28, was involved in a feud with his 44-year-old mom, Vanessa Jenkins, outside their Crown Heights home around 9:50 p.m. Oct. 12 when the woman pulled out a handgun and shot her son twice in the head, according to cops and a criminal complaint. 

When police showed up at the scene, the wounded man cried, “My mother shot me, I’m dying,” according to the complaint, which cites a lieutenant’s body-camera footage. 

He was rushed to the Kings County Hospital Center in critical condition and kept on life support until he succumbed to his injuries Oct. 24, said cops and the complaint. 

His death has been ruled a homicide, according to authorities. 

Vanessa Jenkins was initially arrested a day after the shooting and arraigned on charges of attempted murder, criminal possession of a weapon and criminal possession of a firearm.

She is claiming self-defense, with her son, a suspected Crips gang member, allegedly choking her before she shot him, law-enforcement sources told The Post.

It’s unclear what the dispute-turned-deadly was about.

The victim had 16 previous arrests, including for robbery, sources said.

The mom was ordered held on $500,000 cash bail or $1 million bond during the arraignment, the Brooklyn District Attorney’s Office said. 

A spokesman for the DA’s office said he was unable