gearbox set retroarms blue leviathan mosfet upgrade full aeg

n if gearbox is builded and tested by us, for instalation you need skilled technican or experience BLUE EDITION Gearbox is builded for 430 fps/1.7j RA gearbox V2RA PandoRA gearset 16:1 (3mm)RA Ball bearings 8mmRA INOX shimsRA Cylinder type CRA Cylinder head STANDARDRA Piston 14.5RA NozzleRA Tappet plateRA Delayer chipRA ARLRA Piston head A1RA Selector plateRA Trigger type JJefftron Leviathan V2Dean T connector