The 34-year-old was arrested in Garran on Wednesday and charged with allegedly supplying firearms used in three 2019 shootings on the NSW south coast.

Police will also alleged he ordered the shootings.

Homes in the Canberra suburbs of Kingston and Kambah were also raided, with investigators seizing cars, a firearm, cash, drugs, jewellery and bikie paraphernalia.

The man appeared at ACT Magistrates Court on Thursday, when his extradition to NSW was approved.

He is charged with directing the activities of criminal group, participating in a criminal group, supplying a prohibited firearm and supplying ammunition.

Another three men - alleged to be Nomads members - were on Thursday arrested at a Conjola Park home where drugs and cash were seized.

At least 10 people associated with the gang have been arrested since December, and ACT Policing's Scott Moller said its local presence had been destroyed.

"They're completely diminished - none left," Detective Superintendent Moller said on Thursday.

ACT and NSW police also allege the Nomads were involved in the transport of drugs and weapons between Canberra and Batemans Bay, and expect to lay more charges.

"It's only a small chapter (Batemans Bay) but it shows the impact a small number of committed offenders can have, especially on a peaceful coastal community," NSW Police Detective Superintendent Robert Critchlow said.

"We know Batemans Bay is close to Canberra's heart, it's probably Canberra's beach."

In April, NSW strike force investigators joined with ACT Policing to investigate links between the alleged offences in NSW and ongoing criminal activity in Canberra.

Australian Associated Press