NSW Police officers executed a number of firearms prohibited orders on Thursday.
A house in Queen Street was among the properties visited by a public order and riot squad vehicle.
Detective Sergeant Ian Wright said the notices enabled police to search particular properties.
“It’s part of a broader operation here in Muswellbrook and further down the valley including Singleton and elsewhere,” he said, adding the operation was targeting members of an outlaw motorcycle gang.
“There were six done in total today.
“We expect there will be more of these type of operations done in the future.”