A further three search warrants have targeted the Mongols motorcycle gang in Waikato and Bay of Plenty today.
Over the past two days police have carried out eighteen search warrants as part of the final phase of a covert investigation dubbed Operation Silk.
As a result, a total of 17 people, ranging in age from 19 to 66, face 263 charges.
Three loaded AK47s and two MSSA (military-style semi-automatic) firearms are the latest guns to have been seized by police adding to yesterday's haul.
Superintendent Greg Williams, of the National Organised Crime Group, said this brings the total number of firearms seized during the raids to 13.