An investigation has commenced following the theft firearms during a break-in at Luddenham on Friday night.
About 11.30pm on Friday, an 85-year-old woman was at her home address on Campbell Street when she was woken by a noise.
She got up to investigate and saw a man inside her home; he immediately ran from the premises without incident.
Police were called and a check of the premises revealed two registered firearms had been stolen from a gun safe.
Officers from Nepean Police Area Command are investigating the break-in and would like to speak with anyone who may have information that can assist.
Police are urging anyone with information in relation to this incident to call Crime Stoppers on 1800 333 000.