Lezyne Plunger O-Ring & Flip Chuck Connector for HP Floor Pump

After asking a couple of time if this is metal or plastic I have now found a page from Lezyne which suggest the current swivel has a metal union nut (top left in your picture) and the rest is plastic. This would make sense as it is the union nut that has failed twice on my mini floor pump. They do not mention the all-plastic version which given some comments is uderstandable. Which version do you have in stock? Other option is to buy the whole hose from you (as it appears others with this problem have done) but then I will have to crimp it to my inline pencil gauge.
https://support.lezyne.com/hc/en-us/articles/115004874654-History-and-Compatibility-of-Chucks