Hori Gemmell was arrested in Te Tipua, near Gore, in August last year after a 36-hour manhunt.
The police were already looking for Gemmell when he drove past a patrol car shortly before midnight on August 14.
Instead of pulling over, he attempted to flee the police and rammed the patrol car before fleeing on foot.
He doubled back as officers gave chase and stole the police car, then rammed another police car before stealing two Glock pistols from the gun safe inside the stolen vehicle.
He was found hiding with one of the pistols at a rural address the following day.
The other pistol has since been found.
He will appear in the Invercargill District Court for sentencing this afternoon.