They held the security guard at the rear of the premises, and after confronting the manager and a visitor who arrived at the bar, headed inside the bar.
Once inside the two bar staff, the visitor and the last remaining patron were held in the toilet.
The manager was forced at gun point to open the safe and a large amount of cash was stolen.
The offenders then shut the others in the bottle store, and ran from the bar. Their money bag had a hole in it as they left a coin trail across Lincoln Road into the Addington Mall.
Detective Sergeant Anderson says that the investigation has relied on forensic evidence gathered at the scene, which has been linked the offenders.