"It was clear to police that occupants of this address had ties to an organised criminal gang," Thompson said.
A 45-year-old Whanganui man has been charged with possession of methamphetamine for supply.
A 37-year-old man from Whanganui has been charged with seven counts of unlawful possession of a firearm, one of unlawful possession of ammunition and two of burglary.
"The result from this warrant is outstanding," Thompson said.
"To get seven firearms off the street and out of the hands of criminals is extremely pleasing.
"Police continue to target organised criminal groups and the negative effect they have within our communities through disrupting their activity and holding offenders to account for their offending, taking these weapons and drugs off the street before they harmed anyone is a great result for our community.
"Being able to return stolen property to the rightful owners really caps it off."
Anyone who has concerns about organised criminal activity in their community should contact their local police or report it anonymously via Crimestoppers on 0800 555 111.