piston head in POM with double or bearings

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Pom bearing piston head with double O-ring (XPPD).The new generation of FPS piston heads has been equipped with the new X-RING technology, furthermore a thickness in one millimeter plastic to have the ideal attachment angle in every situation.The lightest among those produced by FPS for rifles with bursts of up to 25/30 pellets per second.Its adoption lightens the weight of the striking mass composed of the piston and piston head with a notable decrease in mechanical stress and noise. Show more