Quote Originally Posted by Solvo View Post
sounds like the wrong one, the plastic plug is flat bottom but a also a fair bit shorter than the probe.
The Steyr probe has quite a narrow taper to the end.

You can remove the cylinder and fill directly too if you fill from bottle. It should have come with a DIN coupling to screw the air cylinder onto the bottle to fill.
that was my next question can you unscrew the cylinder and fill from bottle while still charged??