Some of the Zasdar PP700 series air pistols (including PP700w, PR700w and PP700SA) are now coming with quick detatch filling probes as standard (without a threaded connection).

This quick coupler attaches to these probes and allows the filling probe to connect onto a standard airgun hose.

This quick connector is the is fitted with the standard airgun thread 1/8″ BSP.
This connects directly to a standard airgun hose on a pump or diving cylinder.