Sport Complete Ver II Gearbox With Quick Change Parts For M4 Series AEG Airsoft, Rear Wired High Speed Motor, 8mm Metal Bushings, Reinforced Shell, Low Resistance Wiring, TM Spec Ver 2 Compatible, M120 Spring

Enhanced Ver II Gearbox for M4 AEG with Quick-Change Parts
✔️ Rear-wired high-speed motor, reinforced shell; M120 spring; pack: 1

This high-performance Ver II gearbox upgrade is designed for standard Tokyo Marui spec version 2 AEGs. It features rear wiring, quick-change metal system, and a reinforced shell to enhance durability in M4-series airsoft guns.

✅ Rear-wired Deans connector and low-resistance wiring
✅ 8mm metal bushings for smooth gear mesh
✅ Reinforced shell for durability under M120 spring
✅ Quick-change metal system for fast maintenance

💡 What is a typical use for a gearbox upgrade in airsoft guns?

A handy upgrade improves reliability and performance across common AEG configurations.

• handy upgrade improves trigger response and power delivery under load
• helps maintain consistent FPS with M120 spring and low-res wiring
• compatible with TM spec Ver 2 parts for easy upgrades
• reinforced shell and 8mm bushings reduce wear