Police firearms officer Sergeant Apolo Miria has completed gun checks on Rarotonga as well as the outer islands. The amnesty ends in a little over two weeks, on December 31.
Gun owners who have not yet done so, should call at the National Police Headquarters with their firearms for safety checks, registration, and testing and licensing.
A Cook Islands Police Service spokesman said police wanted to ensure there was full compliance with the regulations.
They also aim to complete an accurate information database on firearms for the safety of the communities throughout the country.
Charges will be laid against unlicensed persons or individuals with unregistered firearms from January 1.
Earlier this year Police Commissioner Maara Tetava said the Cook Islands needed to do better in preventing the importation of firearms and observed that the current firearms database needed to be updated.