The RetroArms CNC Gearbox V3 – 8mm Bearings – QSC is a high-performance upgrade shell crafted for Version 3 AEG platforms, including AK-series, G36, and others. Built from EN AW 7075 T6 aircraft-grade aluminum, this gearbox shell is designed for extreme durability, precision fitment, and long-term reliability under high-stress builds.
This version includes pre-installed 8mm steel bearings for optimal gear support and rotation. It also features the Quick Spring Change (QSC) system, allowing rapid spring swaps without full disassembly — perfect for airsoft technicians, speed tuners, and DMR setups. Enhanced with radiused corners and CNC precision, it reduces stress points and boosts overall structural integrity.
Features
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Compatible with most V3 gearbox platforms (AK, G36, etc.)
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CNC-machined from EN AW 7075 T6 aircraft-grade aluminum
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Pre-installed 8mm steel bearings for smoother gear operation
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Quick Spring Change (QSC) system for tool-free tuning
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Radiused corners to reduce stress cracks and improve longevity
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Precision CNC tolerances for superior alignment and performance
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Corrosion-resistant anodized black finish
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Manufactured by RetroArms – Czech Republic
Specifications
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Material: EN AW 7075 T6 Aluminum
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Gearbox Type: Version 3
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Compatibility: AK, G36, and other V3 AEG platforms
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Bearing Size: 8mm (steel bearings included)
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Spring System: Quick Spring Change (QSC)
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Weight: Approx. 130g
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Brand: RetroArms
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Origin: Czech Republic
What’s Included
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1x CNC Gearbox V3 Shell – QSC
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Pre-installed 8mm steel bearings
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Mounting hardware (if included by manufacturer)
Important Notes
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Professional installation is recommended
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Verify compatibility with your model and parts
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Proper shimming and alignment are essential for optimal performance
Disclaimer
⚠️ This is an airsoft upgrade part. Not intended for real firearm use. Always follow safety protocols and local laws.
