Replacement / Additional filling probe for the NOVA VISTA HP900. Not compatible w/ the PS-Z model. Plugs into the filling port - just be sure to lubricate the O-rings first and press it in all the way. If you attempt to fill your rifle, but the pressurized air escapes out around the plugged-in filling probe, then the O-rings are faulty and should be replaced, not the entire filling probe. The rear end of this probe is a MALE Q/C 1/4" fitting, so corresponds to the common Female Q/C, which can be perused here;

• FEMALE Q/C X FEMALE 1/8" BSP THREADING

The rear of which is female 1/8" BSP threaded and will fit accordingly onto likewise-threaded fill-whips. It comes supplied w/ a PTFE ring seal (rectangular torus shaped) to create a gas-tight seal.

Let us know if you have a setup but need compression fittings for (1/4" type, 1/8" threaded) and we'll do our best to assist you!