PISTON HEAD BEARING IN POM DOUBLE O-RING FPS (XPPA)

POM bearing piston head with double o-ring and piston engagement angle adjustment, the new generation of FPS piston heads has been equipped with X-RING technology, for rifles with bursts up to 25/30 pellets per second, its adoption lightens the weight of the striking mass composed of piston and piston head with a notable reduction in mechanical stress and noise.