Silverback MDRX Hop Up Unit

Silverback MDRX Hop Up Unit Polycarbonate Construction Airsoft Hop Up Unit TCD ring design Incremental ?click? adjustments using 2 ball plungers 36 positions Ranging from 0 up to 750 ?m with the Low Nub (standard bbs configuration) And from 500 up to 1250 ?m with the high nub (heavy bbs configuration) Suitable For Silverback MDR-X Series Electric Gun AEG Airsoft Rifle