One Nation heavyweight Steve Dickson can be heard boasting about how he changed "shit all the time" as a minister, joking about what he'd do if he was rich, and bemoaning Muslim immigration in dozens of conversations captured by an Al Jazeera covert investigation.

Key points: One Nation's Steve Dickson is recorded saying "dangerous people" have been let into the country

One Nation's Steve Dickson is recorded saying "dangerous people" have been let into the country The recordings were made covertly as part of an Al Jazeera investigation

The recordings were made covertly as part of an Al Jazeera investigation The party wants the Federal Police to investigate the recordings

In one of the recordings aired by the broadcaster, the Queensland party leader boasts to an Al Jazeera mole about how easy he found it to change laws during his time in state parliament.

"I was a minister, mate," he said.

"Once I found out about regulation — get out of my way mate, I was just shooting legislation off everywhere.

"I didn't know you could do it. Once you find out, mate, it's like finding the genie's lamp.

"You just do anything. I was changing shit all the time. It was great."

Mr Dickson, who was Queensland's minister for national parks and racing, defected from the Liberal National Party to One Nation in 2017.

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Watch Duration: 26 seconds 26 s Steve Dickson talks about how easy he found it to change laws

The 90-minute documentary centres on One Nation's efforts to solicit political donations from the National Rifle Association (NRA) in the United States.

In a separate recording, Mr Dickson talks about his time on state parliament's powerful anti-corruption oversight body known as the Parliamentary Crime and Corruption Committee (PCCC).

His comments were recorded during a conversation in which he canvassed the idea of One Nation seeking social media backing from the powerful gun lobby.

"I've been a minister in government, I've done most of it," he said.

"I'm really fortunate because I was on a committee within parliament called the PCCC — the Parliamentary Crime and Misconduct Committee [sic] — it's bad shit.

"I'm never going to jail, hey. It won't happen because I walk the knife."

His comments were made before the Federal Government introduced laws banning foreign donations and in-kind support.

There is no evidence suggesting One Nation was successful in getting any support from the NRA.

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Watch Duration: 29 seconds 29 s One Nation's Steve Dickson jokes about what he would do if he was rich

The documentary also shows Mr Dickson at a gun lobby fundraiser in Washington discussing Muslim immigration.

"We've been importing all these Muslims into Australia," he said.

"We have about 230,000 people coming in a year. Our population's only 25 million and, some really dangerous people.

"They're just breaking into people's homes with baseball bats and killing people.

"Basically stealing everything they own. Gangs.

"Our country's going into chaos."

Figures from the Department of Home Affairs show fewer than 163,000 people were granted permanent migration status in the last financial year.

James Ashby says he has asked the Federal Police to investigate the secret recordings. ( ABC News: Jacob Kagi )

In a separate conversation over dinner with Pauline Hanson's chief of staff, James Ashby, and Al Jazeera's fake gun advocate Rodger Muller, Mr Dickson jokes about what he would do if he was rich.

"I'm going over to one of them drug-dealing mansions on the beach and hire it for a month. You know the ones that are 25 rooms and the chef and everything?" he said.

"We'll drink and shoot the shit out of everything down the water — machine guns and everything. Mate, that's my dream.

"We can protect ourselves, just in case."

At a press conference on Tuesday Mr Dickson claimed they had been set up by a "secret agent" but stood by a number of his comments including those about the PCCC.

"I know the law. I understand the law, I always stay on the right side of the law," Mr Dickson said.

Mr Ashby said the talks with the NRA were just to look at their social media techniques.

"This was not about sourcing money from the NRA.

"The conversations that have been recorded where is a talk of $10-20 million, I will be the first to admit, we'd arrived in America, we got on the sauce, we'd had a few drinks and that's where those discussions took place, not with any potential donors, no-one but Rodger Muller, Steve Dickson and myself."

He said the matter had been referred to ASIO and the Australian Federal Police.

Watch the second part of the Al Jazeera investigation on Thursday on ABC TV or watch the full documentary on iview.