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Retro Arms SGD 3 Gearbox Reinforcement

ID: 59007 (Part-Retro-6404)
Retro Arms59007
Retro Arms SGD 3 Gearbox Reinforcement
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Designed to fit snuggly between the gearbox and front end of the upper receiver the SGD3 acts as a buffer and reinforcement piece in high performance M4 AEG Airsoft rifles reducing the likelihood of damage to the hop up unit or gearbox shell.


  • Compatible with most Tokyo Marui spec. M4 Airsoft AEG rifles
  • CNC machined from aircraft grade aluminum
  • Precision designed for factory spec. fit.
Part: Reinforcement block for Ver.2 M4 gearboxes
Application: To reduce the likelihood of gearbox shell and hop up unit damage
Color: Anodized black
Dimensions: 1" x 1"
Compatibility: Tokyo Marui spec. Ver. 2 gearboxes
Material: Aircraft grade aluminum

Manufacturer: Retro Arms

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