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Ships within 48 hours · Estimated delivery Aug 2 - Aug 7
Some fitting may be necessary depending on receiver tolerances
Full CNC-machined metal teeth for maximum strength and precise gear engagement
Optimized internal space for motor fitment
Finish: Anodised
Compatibility: M4 AEG/HPA builds (verify fit before purchase)
RetroArms CNC Gearbox M4/416 TM NGRS (8mm) Gel Blaster Some fitting may be necessaryThe RetroArms CNC Gearbox M4 416 TM NGRS (8mm) is a premium CNC machined gearbox shell designed specifically for Tokyo Marui Next Gen Recoil Shock (NGRS) M4 and HK416 platforms. Built from high strength aluminum alloy and engineered with extreme precision, this gearbox provides unmatched durability, perfect gear alignment, and enhanced performance for high end custom builds. Ideal for advanced technicians and performance focused builds, this gearbox