LONEX M4 Full Gearbox Hi-Speed SP100

Looking for the perfect upgrade for your airsoft gun? Look no further than the LONEX M4 Full Gearbox Hi-Speed SP100

Lonex introduces 2nd generation complete enhanced gearbox, compatible with all the M4/MP5/G3 AEG models on the market.

Complete gearbox includes:

• 2nd generation super gearbox
• Air seal nozzle 
• Enhanced tappet 
• Aluminum cylinder head
• Steel cylinder
• Aluminum piston head
• Enhanced 10 steel teeth piston
• Tune-up spring SP100
• Steel ball bearing spring guide
• Anti-heat electric switch
• Enhanced gear (Original ratio)
• Enhanced anti-reversal latch
• Enhanced trigger
• Anti-Heat Selector Plate for M16 Series
• Cut Off Lever for Gear Box Ver.2
• Safety Cover 
• 8mm ball bearing
• Gear Box Spring Set for Ver. 2 
• Shim set
• Teflon gear grease