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.
READ MORE: COOLOONGUP TAVERN STAFF TACKLE ALLEGED ARMED OFFENDERS
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.
Concerns for missing man last seen in Medina
Man charged after slashing victim's neck with glass in Madora Bay
Rockingham disability accommodation and social housing refurbished thanks to State Government grant
Local fishers asked to have their say on extending crabbing season closure, simplifying bag and boat limit rules
Detectives hunt driver who reversed into Mandurah tobacco store
Mandurah Crab Fest boasts huge range of free, family friendly entertainment
Fuel prices surge in Perth, Mandurah
Teen boys charged over Mandurah burglaries
Tragic update in search for missing man Robert Snyder