Retroarms 8mm CNC processed spare gearbox case for SRE electric gun

New hi quality 100% CNC processed model available eith retain srews included
ideal use with hi power springs and intense hi speed full auto technology
unlike common parts the case is made by full material and worked and finished by use of CNC precision machines
thnaks to the feature it combine incredible strenght with light weight (50% less of a standard molded gearbox)
compatible with Marui 416, sopmod,cqb SRE models