Detectives seized four 3D-printed firearms from a property at Geneva on Tuesday, June 21.
The Casino detectives, assisted by officers from Kyogle, searched a property on Afterlee Rd shortly before 10am on Tuesday.
They seized a rifle, three handguns and parts for a fourth handgun, all allegedly 3D printed.
The search comes as part of ongoing investigations into multiple illegal firearm manufacture and firearm/weapon possession offences.
Anyone with information about the illegal manufacture and possession of firearms is urged to contact Lismore Police or Crime Stoppers on 1800 333 000.