S400/S510 HuMa Regulator Service O rings

S400/S510 HuMa Regulator Service O rings

These are replacement O rings for the Air Arms S400/S410/S510/HFT500 HuMa regulator. Handy for when you want to carry out a basic service of your HuMa regulator.

The set contains:

2 x large main regulator body O rings,

1 x small regulator piston O ring,

1 x large regulator piston O ring,

1 x small set screw adjuster O ring,

They are black nitrile (rubber) O rings.

Please have a look at the Fitting Instructions page for a service video.

The photo is a generic picture of some O rings, not the actual O rings you will receive.

£3.00