A NSW Police Superintendent has rejected a local Shooters Party claim that the state's Firearms Registry has leaks which are putting lives at risk.

Jim Muirhead from the Riverina branch of the Shooters and Fishers Party says there have been four cases of robberies and home invasions of legitimate gun owners in the last six months.

He says the gun registry should be closed as has happened with Firearms Registries in Canada and New Zealand.

The NSW Firearms Registry manager, Superintendant Bruce Lyons rejects the claim that the recent spate of firearms thefts has been fuelled by information being leaked from the registry.

But he says the Murwillimbah based registry is undergoing a review.

He says if there was information being leaked it would be investigated and stopped immediately.

"The Shooters and the people in the industry who have firearms can be rest assured this review will look at everything the firearms industry undertakes," he said.

"It will look at security issues within the registry. So if there is a requirement for improvement this review will bring that out," he said.

The Superintendent says there are more than 800,000 registered guns in New South Wales and the Firearms Registry is working to crack down on illegal gun activity.

He says thieves are opportunistic and rural properties with guns are a target for criminals.

Superintendent Lyons says there were more than guns 600 guns stolen in 2011, a little more than 700 stolen last year and around 350 have been reported stolen to August this year, reflecting a slight downward trend.

"There are hundreds and hundreds of thousands of guns and hundreds of thousands of licences," he said.

"The great great majority of people are complying," he said.

"There has been some minor compliance issues in which the police have given advice. Some more serious breaches where people have had their firearms taken from them."

"But overall it has been very positive."

The number of unregistered or illegal firearms circulating is not known.

Superintendent Lyons is appealing for public assistance to crackdown on illegal firearms activity.

"That is something that we have to take as seriously as we can and deal with it as best we can," he said.

It's so important that we don't leave the question mark hanging over the community that nothing is being done - there's a lot being done into detecting those people who are illegally using firearms."