He is due to appear in the Papakura District Court today charged with wounding with intent to cause grievous bodily harm and unlawful possession of a firearm.
This follows an earlier arrest in the investigation of an 18-year-old man.
Detective Inspector Shaun Vickers says police continue to have a low tolerance for the reckless level of violence that was on display earlier this month and want to reassure the community that such incidents are taken extremely seriously.
Police would still like to hear from the public who may have information to assist the investigation.