Active Valve System

The piston of the Fusion, Super X2 and Super X3 shotguns has an "Active Valve System" regulating valve located inside the piston. This regulating valve operates independently of the piston, offering greater efficiency than other gas systems and greater durability.
Reliability and Versatility the “Active Valve system”
With light loads , the piston uses the essential energy of the gases for perfect operation.

Under heavy loads , excess gas is expelled through side piston vents.
It works perfectly with all 28 gr cartridges. to 56 gr .
The regulating valve has 3 segments that ensure perfect sealing, as well as cleanliness of the charger tube , for optimal operation.

The extremely short stroke of the piston limits the amount of gas expelled into the mechanism.