Police seized over 100 firearms from a property in Cobar on Sunday.
Police said on Monday that detectives from Darling River Local Area Command attended the property and spoke with a resident about 9.45 on Sunday morning.
During a subsequent search of the property, officers located and seized 114 firearms, with the majority of them unregistered and not stored safely.
Thousands of rounds of ammunition were also seized.
Police said all items were taken to Cobar Police Station for further examination.
Investigations are continuing.