ASG ULTIMATE Ver.II M4 AEG Complete Gearbox, High Speed (M100 Spring)
A complete 2nd Generation Version 2 gearbox from ASG. This Enhanced Lonex gearbox features all upgraded Lonex internal parts. It is compatible with all TM style AEGs, the FPS we see with these gearboxes naturally depends on hop and barrel but should provide between 340 and 350 FPS with a .20g BB on average.
These are premium gearboxes and represent a significant performance increase over all stock gearboxes on the market.
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