Specna Arms CNC processed 8mm spare gearbox case for ver.3 electric gun (quick detach spring guide)

New hi quality 100% CNC processed model available 
ideal use with hi power springs and intense hi speed full auto technology
comes with quick detach spring guide and 8mm ball bearing supports
unlike common parts the case is made by full material and worked and finished by use of CNC precision machines
thanks to the feature it combine incredible strenght with light weight (50% less of a standard molded gearbox)
Parts included:
-Upper stopper rail
-Hold cover buton
-Switch and internal selector
-Retain screws and rivets
fits Marui, G&G,Specna, Marui and compatible electric guns
ideal use for AK, Mp5k, AUg, G36 electric gun series (ak parts need to be removed when use in other models)