I have this mixed gas nitroigen/co2 cylinder below, but it comes with a male thread rather than your usual female for mixed gas. Any idea of where I can get a regulator to fit this. We have a stout nearly ready and it would be sweet to use the nitrogen with it. I searched ebay etc but only see co2 regulators with possible suitable fittings like I have.
![rps20120812_175457.jpg](https://proxy.imagearchive.com/51d/51d8368789b42f09cb31cac562f6495e.jpg)