Retro Arms - M4 - 8mm QSC Gearbox Shell - EMG Version

Color: Black
Sale price$ 119.95

Pickup available at Gilbert Arena

Usually ready in 24 hours


  • CNC Gearbox Shell 
  • 8mm Bearings/Bushings Compatible
  • Quick change spring guide system with Included spring guide
  • Screws included
  • Deeper wire channels along gearbox base
  • Pre-radiused cylinder windows to distribute impact force

NEW - Factory New, bushing or bearings have not been installed

Part Number 49403
Material CNC Billet Aluminum
Color Black or Silver (Depending on Manufactures Batch)
Manufacturer Retro Arms
Compatibility V2 Gearbox AEG Rifles.  Will not work with Ares/Elite Force/S&T gearboxes that use microswitch proprietary trigger switch.  Contact technicians with any questions.

DISCLAIMER: Please use discretion when installing custom parts as fit and compatibility may vary. Some modification may be required. Professional installation recommended.

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