Air Arms S310/ S400/410 Fill Valve Upgrade the second stage valve is

the second stage valve is designed and manufactured for pneumatic operation

4kg (Size M)

whether double ender or the smallest clip can easily be handled in the thickest dry glove systems

and 6+6kg on sizes L and XL

1/8″ BSP Unit  for direct fitting to a hose or one of our Quick Coupler Plugs

Air Arms S310/ S400/410 Fill Valve Upgrade the second stage valve isUpgrade your old snap coupler style fitment to the current version of Air Arms filling system. Parts included: Replacement Fill Valve Body with O rings Current style Fill Valve Current style Fill Adaptor New End Cap Not suitable for the S200 We recommend that these items are only fitted by a competent person.