An Orelia man and a Kenwick man have also been slapped with a string of charges following the incident.
Regional Investigations Unit Detectives have charged two additional men following the arrest of three men in Cooloongup for an armed hold up on Monday night.
A 30-year-old man from Kenwick has been charged with 28 offences, while a 37-year-old man from Orelia has been charged with 30 offences.
It's allege two men entered the Nags Head Tavern on Ennis Avenue around 10pm on Monday, armed with a handgun and hammer.
The men allegedly threatened staff, demanding to be taken to the back office and given cash.
The pair, along with the three other men, will appear in the Perth Magistrates Court today.