Michael 'Micky' Frazer escaped a fourth attempt on his life at the weekend.
The car dealer was chased through Memorial Gardens in Islandbridge just before 7pm on Saturday by two gunmen.
The thugs then randomly fired several rounds, but none hit Frazer.
His car was earlier rammed by the men who tried to block him in before he fled on foot.
The two men, one of whom was described as five-foot-eight and wearing a grey jacket and blue jeans, chased after Frazer and fired "a number of shots".
Gardai said he managed to escape into Bellevue apartments and was uninjured.
Detectives are appealing for witnesses to the incident which happened next to Islandbridge Court Apartments and Bellevue Apartments on Saturday night.
The gunmen were driving a 08-registered red Honda Civic.
The attack came only days after Frazer (34) smashed into a pole after he feared he was being followed by hitmen on the Naas Road. It is understood he spotted a black Range Rover driving close behind him and made a swift turn right on to the canal beside the Luas line, wrongly believing he was being followed.
He lost control of his BMW and crashed into a Luas pole.
Frazer emerged unscathed from the car, flagged down a taxi and went to Crumlin Garda Station where he told officers he had escaped another assassination.
Described as a "dead man walking", he had already survived three murder attempts this year.
Frazer, who previously acted as a driver for Freddie Thompson, escaped a hit in Firhouse in August when the gunman's weapon jammed.
In Clondalkin last March he was shot three times, but managed to drive himself to Clondalkin Garda Station.
Gardai say he survived one other attempt on his life this year.
Memorial Gardens was the scene of the shooting of Luke Wilson, then aged 19, who lost an eye when he was shot in the face in January last year by his best friend Patrick McCann.