The RetroArms CNC Gearbox V2.2 – QSC is a next-generation gearbox shell designed for elite airsoft builds requiring precision, durability, and easy maintenance. Made from a solid block of EN AW 7075 T6 aluminum (commonly referred to as aircraft-grade aluminum), this shell is engineered for extreme stress, making it perfect for high-speed, high-torque, or DMR configurations.
This V2.2 version features revised internal geometry for better alignment, radiused corners for crack prevention, and RetroArms’ signature QSC (Quick Spring Change) system — allowing you to swap your mainspring without disassembling the gearbox entirely.
Features
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Made from EN AW 7075 T6 CNC-machined aluminum
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Compatible with M4/M16 AEGs using V2 gearbox layout
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Quick Spring Change (QSC) design
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Version 2.2 internal geometry for improved tolerances and alignment
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Radiused corners for added structural integrity
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Supports 8mm bushings or bearings
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Reinforced gearbox shell walls for high-stress setups
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Black anodized finish for corrosion resistance
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Made in the Czech Republic by RetroArms
Specifications
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Material: EN AW 7075 T6 Aluminum
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Gearbox Type: Version 2.2
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Compatibility: Most M4/M16 AEG platforms
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Spring System: QSC (Quick Spring Change)
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Bearing/Bushing Size: 8mm
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Weight: Approx. 120g
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Brand: RetroArms
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Origin: Czech Republic
What’s Included
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1x CNC Gearbox V2.2 Shell – QSC
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Mounting hardware (if provided by manufacturer)
Important Notes
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Professional installation strongly recommended
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Compatible with most V2 internals, but may require tuning depending on your build
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Always verify alignment and shimming for optimal performance
Disclaimer
⚠️ This is an airsoft upgrade part and is not intended for real firearm use. Use responsibly and follow local laws and field rules.
