Armed police uncovered a large drug lab and a significant amount of methamphetamine when they swooped on a Hamilton property today.
The house in Melville was one of three properties searched during a multi-agency drug bust known as Operation Maxine.
Detective Senior Sergeant Nigel Keall said two men, aged 48 and 51, were arrested at the address.
Police also uncovered a handgun, a large quantity of methamphetamine and a "sophisticated methamphetamine laboratory".
Lab equipment and chemicals were seized, but police said it would still take some days to examine and clear the property.