The Queensland Government has not ruled out equipping police with bigger guns and body armour as part of the bikie crackdown.

Queensland Police Union (QPU) president Ian Leavers says bikies' behaviour will become even more violent as they try to avoid the State Government's tough new jail terms for members of criminal motorcycle gangs.

Mr Leavers says the QPU is worried anger about the State Government's new laws could be directed at its members.

"The bikies will do anything to avoid capture and may seriously injure or even kill police," he said.

Mr Leavers says frontline officers need more than glock pistols and Tasers if they are to rid Queensland of criminal bikie gangs.

He says he has written to Police Commissioner Ian Stewart demanding officers on the frontline be equipped with semi-automatic rifles and tailored body armour.

"[Semi-automatics rifles] are the rifles on issue to police in rural and regional Queensland," he said.

"When police are required to contain the outer cordons, the glock pistol that is on issue is pointless.

"The rifle will give better security - it has better firepower."

Mr Stewart says a study will be carried out to determine whether police need more firepower.

"We don't want to be seen as threatening, but there are times when our people will need specialist equipment to do their job safely and that's what I'm looking at right now," he said.

"At the end of the day, I am responsible for the safety and welfare of all of our members and if that means better equipment, then they'll get it."

Police Minister Jack Dempsey says if Mr Stewart makes the request, it will be granted.

"We've said we'll supply whatever it takes," Mr Dempsey said.

Yesterday, the QPU also said police who disagreed with the crackdown on bikie gangs had been told to reconsider their future with the service.

The QPU said internal emails sent to rank and file officers warned them to carry out the mission or be shown the door.

Mr Leavers said yesterday police had every right to question the crackdown and that some officers were living in fear of retribution.

He said officers staking out tattoo parlours and clubhouses in marked cars and full uniform may be targetted.

However, yesterday Mr Stewart said officers were being asked to take reasonable and lawful actions.

"I am very, very clear about this - I want our people to do everything lawfully, fairly, professionally," he said.