Five guns, a chainsaw and two telescopic rifle sights have been stolen from a shipping containing in Glenorie.
Police said the owner of a property on Cattai Ridge Road discovered that the shipping container and safe used to store his firearms had been broken into about 2.30am on Thursday.
The locks from the container were missing and five firearms, a Stihl chainsaw, two telescopic rifle sighes and a pair of motor-cross boots had been taken from the container.
The firearms taken were: a Lithgow .22 single shot rifle, a Brno .22 rifle, a Hollis and Sons side by side double barrel 12 gauge shotgun, an Imperial of Spain side by side double barrel 12 gauge shotgun and a Lee Enfield .303 rifle.
Police have been told that the premises had been unoccupied since mid June of this year.
Police from the Hills local area command are continuing to investigate the incident.
They have urged anyone with information about unusual or suspicious behaviour in the area to contact police