A thief pointed a small, brown handgun at a milk bar attendant during a hold-up in Noble Park.
He entered the Noble Street store just before 8am on Saturday 1 October wearing a black-hooded jumper, sunglasses and a scarf over his face.
The thief pointed the gun at the victim, demanded cash and cigarettes, and fled with $90 and 20 packets of cigarettes.
He was last seen travelling south along Corrigan Road in a white four-wheel drive.
Call Crime Stoppers on 1800 333 000 with any information.