Mauser 96 - cock on opening kits

Does anyone know where to source the above (ideally in NZ)?

I have a Timney trigger for mine but would also like a cock-on opening kit (the Dayton Triaster kit, including a trigger, was once pretty popular here). It seems impossible to get them out of the US/Brownells etc as I did a few years ago...

Thanks,
Ben

I emailed that Dayton bloke and he just posted me a couple, that was a couple of years back. Bloody cheap as well.