Silverback Piston Head For Silverback MDRX AEG Airsoft Rifle

Silverback Piston Head For Silverback MDRX AEG Airsoft Rifle CNC Aluminum Airsoft Ventilated Piston Head Inlucded FKM o-ring, POM glider ring, PU feeding o-ring, Delayer stainless steel tube and spring Suitable For Silverback MDR-X Series Electric Gun AEG Airsoft Rifle