E&C Quick Change V2 Gearbox (Complete) – Drop-In for M4/M16

The E&C Quick Change V2 Gearbox is a complete, drop-in airsoft gearbox designed for M4, M16, and similar platforms. It delivers a ready-to-install solution with a quick-change spring system, making FPS adjustments straightforward while you maintain your preferred motor separately.

• Complete Drop-In Assembly: Fully assembled gearbox ready to install into compatible receivers; motor is not included.
• V2 Quick Change Spring System: Swap springs quickly to adjust FPS without disassembly or extra parts, giving you fast field customization.
• Platform Compatibility: Designed for M4/M16-style bodies; fitment may vary by specific receiver, so verify compatibility with your model.
• Motor Excluded: Ships without a motor, allowing you to pair with your preferred motor and torque rating for your build.
• Durable Internal Construction: Engineered to provide smooth cycling and reliable performance under regular gameplay and maintenance use.

With this gearbox, you gain a streamlined upgrade path that reduces downtime and simplifies maintenance. The quick-change spring capability lets you tune FPS to match local rules or event limits without the need for extensive disassembly, while the complete assembly ensures you’re ready to deploy right away. It’s an excellent choice for players upgrading worn stock gearboxes, building modular platforms, or creating practice setups with adjustable performance. Before purchase, confirm that the body and receiver are compatible to ensure a proper fit.