M4-A1 FULL GEARBOX SET (Infinite Torque-Up)

All Enhancement Parts for AEG II, Do it by yourself！

Fits for SP 130-170 AEG Spring (Not included, Optional)

Instruction for Full Gearbox Set <Download here>

100% Made in Taiwan, Full Tune-Up Kit Include:
Enhanced Gearbox Ver.II
Switch Assembly (Front to Handguard )
Steel Gear Set (Infinite Torque-Up)
Bore-Up Lucid Chromium Plating Cylinder
Bore-Up Air Seal Nozzle
Bore-Up Stainless Cylinder Head
Bore-Up Enhanced Ventilation Piston Head
Polycarbonate Piston
Anti-Heat Selector Plate
6mm Steel Bushing
Steel Anit Reversal Latch
Steel Enhanced Cut-Off Lever
Ball Bearings Spring Guide
Enhanced Tappet
Shim Set
Gearbox Inside Spring Set
Steel Trigger Set
Safty Cover
Teflon Grease

Material: S304 Stainless Steel/Brass/Polycarbonate/Aluminum/Acetal/Steel

Item No.: FGS-11
Suggested Retail Price: USD 285.00