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CNC-machined aluminum for superior strength and durability
Double internal O-rings for excellent air seal and stable compression
Compatibility:
Constructed from CNC-machined aluminum and finished with a sleek black anodized coating
RetroArms CNC Upper Split Gearbox V2 8mm QSC (2025) Cylinder Heads CNC-machined aluminum for superior strengthThe RetroArms CNC Upper Split Gearbox V2 8mm QSC (2025) is a high performance upper gearbox shell designed for Version 2 AEG split gearbox platforms. Crafted from aircraft grade 7075 T6 aluminum using precision CNC machining, this component offers exceptional strength, tight tolerances, and lightweight construction built to handle high stress, high RPS setups. This upper shell features 8mm bushing bearing compatibility and integrates QSC (Quick Spring