The additional plenum (airchamber) can be screwed into all variations of our regulators with manometer.
The additional airchamber is appropriate for large bore airguns with larger powers where the volume of air inside the regulator ( 14cc ) alone may not always be sufficient to achieve high powers.
Whilst you screw the airchamber in regulator you may get a further 14cc of the regulator air quantity.
The airchamber with regulator will extend your airtank around 93 mm.
It isn't suitable to apply this chamber for airguns wherein the airtank forms the back side of the stock where is your shoulder placed.
*This item cannot be returned