Guarder SP120 Full Tune-Up Kit for TM M4-A1 Series (FTK-40)

Guarder SP120 Full Tune-Up Kit (FTK-40) for TM M4-A1 Series

Unleash the full potential of your Tokyo Marui M4-A1 with the Guarder SP120 Full Tune-Up Kit?the ultimate package for achieving reliable power and precision.

Designed as a comprehensive internal overhaul, this kit replaces critical factory components with high-strength, performance-optimized parts. The legendary Guarder quality ensures exceptional durability and longevity, while the SP120 spring rating provides a significant performance boost, typically pushing your rifle's velocity towards the ?400 FPS mark (results vary based on air seal and barrel length).
Why Choose the Guarder SP120 FTK?

This kit is the perfect solution for upgrading older replicas or preparing a stock TM M4 for the rigors of modern skirmishes. It ensures all linked air compression components are perfectly matched for optimal efficiency.

Complete Air Seal Overhaul: Replacing the cylinder, cylinder head, and air nozzle guarantees maximum air compression, ensuring consistent shot-to-shot velocity and efficiency.

Significant FPS Upgrade: The core Guarder SP120 Spring delivers a robust power increase, bringing your replica into competitive field limits.

Enhanced Reliability: All components are constructed from high-quality materials to handle the increased stress of the stronger spring, preventing premature wear and tear.

Precision Compatibility (FTK-40): Specifically designed and dimensioned to fit perfectly within the Tokyo Marui M4-A1 AEG gearbox shell and air volume system.