Focusing on the manufacture and distribution of methamphetamine in Auckland, police carried out search warrants in Mount Roskill and Parakai. A commercial premise was also searched in Newmarket.
Police recovered an AK-47 with around 1500 rounds of ammunition, two pistols, methamphetamine, and around $15,000 in cash.
And last week, five people were arrested following an investigation into the supply of MDMA and cannabis in Central Otago and Queenstown.
Meanwhile, both men arrested today following the North Shore search warrants will appear in the North Shore District Court tomorrow.
Police say inquiries are ongoing and further charges will be laid.
One of the men, aged 60, is facing two charges of unlawful possession of a firearm and unlawful possession of ammunition.
A 44-year-old man, meanwhile, is facing a charge of methamphetamine possession.
Police thanked the public for their co-operation this morning as a small section of Glenfield Rd was closed off to allow the safe execution of the search warrants.