CYMA Sport Complete Version 2 Gearbox for M4/AR-15 AEG; Deans

The CYMA Sport Complete Version 2 Gearbox for M4/AR-15 AEG; Deans is a ready-built internal upgrade or replacement designed for players who want reliable performance without building a gearbox from parts. Pre-assembled at the factory, it provides consistent alignment, dependable shimming, and solid electrical efficiency straight out of the box. Fitted with an onboard electronic trigger and low-resistance wiring, this gearbox offers improved trigger response compared to standard mechanical trigger setups. The reinforced shell, 8mm bushings, and metal spring guide make it a dependable choice for skirmish rifles needing a durable internal core. This gearbox is best suited to players upgrading a worn or broken Version 2 gearbox or building a budget performance M4 platform. It is not a high-speed competition build, but it is a solid, reliable foundation that balances cost, durability, and practical performance. Compatibility with Tokyo Marui spec Version 2 parts means future upgrades remain easy.

Brand

CYMA

Category

gear

From

69.99 GBP

Where to buy

• Patrol Base — 69.99 GBP In stock

Specs

Upgrades & Maintenance > AEG Parts & Upgrades