Quote Originally Posted by Aimstraight View Post
Correction, the refill adapter that came with my Mk 2 (AA/CZ T200 Target rifle) is THIS one. It fits into the DIN outlet of a HPA cylinder, the removable S200 cylinder screws into the adaptor.

Sounds like the suggestion from gc93 covers the issue you have with the old snap on connector.
Can't believe I've been so stupid
I used to have a CZ colour that filled up that way. I'll get onto Best Fittings first thing