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.
WA's first public National War & Service Animal Day commemoration to be held at Dawesville War Memorial
New road safety laws to be named in memory of Furnissdale hit-and-run victim
UK nuclear submarine docks at Rockingham's HMAS Stirling
Rockingham Police ask for public's help to find copper cable thieves
Woman dies in Bunbury motorcycle crash
International chef Diana Chan announced as Mandurah Crab Fest culinary ambassador
One Nation issues statement after former Secret Harbour candidate shares same name as accused terrorist
Alleged Mandurah spa thief wanted for questioning
Meadow Springs man accused of threatening to kill Prime Minister, NSW Premier appears in court