Mr Ahmed said: "A lot of us have life commitments in New Zealand, they have families, children. But there is a feeling, a moral duty that they should unite against this kind of brutal fighting from Isis."
They were told by the Kurdish Government they were not needed, and have instead supported their compatriots by sending donations and holding anti-Isis marches.
Mr Ahmed said local Kurds were also uncertain about whether they would be criminalised if they travelled to Iraq or Syria, no matter who they fought for.
Attorney-General Chris Finlayson said through a spokesman yesterday that New Zealand law did not prevent Kiwis from travelling to Iraq and Syria. "We would note, however, that the Ministry of Foreign Affairs and Trade advises New Zealanders against all travel to these countries," he said.
Mr Finlayson said it was not the Attorney-General's role to provide legal advice to the public and he would not "issue blanket guidance on these matters".
The Government believes there are a handful of New Zealanders fighting with Isis, and Prime Minister John Key revealed on Monday that several more Kiwis had been "talked down" by spy agencies from travelling to the region.
When asked to comment on whether the SIS had concerns about New Zealanders fighting against Isis, a spokesman said: "Foreign fighters taking part in or returning from any sort of conflict zone are a concern for many countries, including New Zealand.
"We are aware of a small number who have made it to the likes of Syria and Iraq, but we won't necessarily know of all of them."