Complete Gearbox Set ( without Spring ) for M4 / M16 Series. Optional Guarder SP 85-120 AEG Spring Recommended. 9.6V or higher batteries recommended for SP 100-120 AEG Springs.
Package Includes: - Enhanced Gearbox Ver. 2 - Buttstock Switch Assembly - Steel Gear Set - Lucid Chromium Plating Cylinder - Air Seal Nozzle - Stainless Cylinder Head - Ventilation Piston Head - Polycarbonate Piston - Anti-Heat Selector Plate - 6mm Steel Bushing - Steel Anti-Reversal Latch - Steel Enhanced Cut-Off Lever - Enhanced Tappet Plate - Shim Set - Gearbox Spring Set - Steel Trigger Set - Teflon Grease