Made in New Zealand Shotgun Mag Extensions?

I'm wondering if anyone here knows of any companies in New Zealand that can or will make magazine extensions for shotguns.
The police are fucking about as usual and doing everything they can to stop the importation of legal magazine extensions, so we're going to have to make them here.
We have countless 4 shot semi auto and pump shotguns, so there should be plenty of demand for +1 extensions.
For 3.5" shotguns, we should be able to get extensions that hold +2 of 2.75" shells.
The extensions themselves are pretty straightforward to manufacture, so if we can make aluminium stocks and so on, I'm sure we have the capability to make some mag extensions.
If you've got any ideas, or know anyone who could help with this, feel free to share.

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Originally Posted by Kiwigunguy

I'm wondering if anyone here knows of any companies in New Zealand that can or will make magazine extensions for shotguns.
The police are fucking about as usual and doing everything they can to stop the importation of legal magazine extensions, so we're going to have to make them here.
We have countless 4 shot semi auto and pump shotguns, so there should be plenty of demand for +1 extensions.
For 3.5" shotguns, we should be able to get extensions that hold +2 of 2.75" shells.
The extensions themselves are pretty straightforward to manufacture, so if we can make aluminium stocks and so on, I'm sure we have the capability to make some mag extensions.
If you've got any ideas, or know anyone who could help with this, feel free to share.

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yeah mate there is a guy in nz doing them for beretta's and benelli's i think he does others they are around 140 last time i saw have a look on nz waterfowler on facebook his contact details are there

Greystone Guns were making 2 shot extensions for the Benelli M2 after the law change (taking it from a 3+1 to 5+1), and selling like hotcakes, I assume they still are and I'd be surprised if they don't make them for other shotties.

Made one years ago for a browning A5.
Spare mag cap and some moly tube from my mate who was building a small kit plane.
Just learned how to drive a tig welder. Welds not primo but serviceable
Used another spring and a joiner thingy but probably could've got away with the original spring like they all do as that was a bit of a pain
All worked though