ICS Taiwan CNC Upper Gearbox V2 for AR15/M4 & M16 EBB Airsoft Replicas

Engineered from solid aircraft-grade aluminum (EN AW 7075 T651), this ICS Taiwan CNC Upper Gearbox V2 delivers unmatched durability and resilience for your AR15/M4 or M16 EBB airsoft replica. With a tensile strength of 590MPa—far exceeding common steel’s 390MPa—this gearbox withstands heavy use better than zinc-aluminum alternatives, ensuring long-term reliability even under intense gameplay conditions.

Key Enhancements for Performance:
– Grooved Spring Holders: Secure springs in place during rapid firing to prevent slippage or dislodging.
– Precision-Machined Threads: Shaped threads boost structural integrity compared to cut threads found in standard gearboxes.
– Centered Alignment: Milled grooves and edges guarantee flawless part alignment during assembly.
– Reinforced Cylinder Head: A 100% increase in material around the high-stress cylinder head area enhances resistance to wear and deformation.
– Trimmed Edges: Sleeker outer edges reduce friction while maintaining structural toughness during operation.

Installation & Compatibility Notes:
Designed exclusively for Umarex EBB airsoft replicas, this gearbox requires careful handling during setup. Use only 1Nm tightening torque on screws to avoid stripping; thread glue ensures secure fastening without over-tightening. Avoid MAXX cylinder heads entirely due to compatibility risks. While compatible with most Tokyo Marui-standard parts, note that non-standard dimensions from other brands may cause fitting issues—a common challenge in airsoft’s non-uniform market standards.

For serious players seeking a high-performance upgrade that balances power and longevity, this CNC gearbox offers superior build quality without compromising precision or safety—ideal for those ready to elevate their airsoft experience with engineered excellence.