ANY deal allowing shooters into NSW national parks will only involve culling vermin and other feral animals and not hunting, Premier Nathan Rees says.

Mr Rees said no agreement has been struck with the two Shooters MPs, who want the government to back their push to allow hunting in national parks.

The Shooters have created draft legislation believed to include allowing hunting in national parks and establishing enclosed game reserves or safari parks.

Mr Rees said both Labor and the Shooters wanted to reach an agreement, but the desire for a deal did not mean it would come at any cost.

"I think most reasonable people, sensible people, understand that where we have vermin and feral animals in national parks, we currently use contractors to get rid of that pest and that vermin," he said.

"Consistent with that, there is room for discussion."

The government relies on the support of the two Shooters MPs to help its legislation pass the upper house - where it does not hold a majority.

Since it announced it would not support hunting in national parks, the government has lost the crucial Shooters votes.

The Greens say allowing hunting in national parks is both ethically and environmentally wrong.

However, Mr Rees said most people were happy for feral animals to be culled.

"There's a very clear distinction here between the notion of hunting in the national park versus the culling of vermin or feral animals," Mr Rees said.

"That's what we're prepared to talk about.

"Getting rid of animals that wreck the environment, wild pigs, dogs that sort of thing, I don't think anyone will have an issue with that."