FX new regulator rod – upgraded brass version including seating surfaces for the FX Maverick and Wildcat MK3 BT air rifle.
Includes o-ring D26 (19109).

Now newest (second version) of the brass piston with no hole in side and a flusher sealing face.

Same piston is used in both the primary and secondary regulators

Damage to the polymer face of this part is often a cause for regulator creep issues.