9mm upgrade pružina pro odstřelovací pušky - M150 (500 FPS)

9mm Upgrade Spring for Sniper Rifles M150 (500 FPS) is a tuning component designed to increase the performance of manual airsoft sniper rifles. Manufactured from quality spring steel with heat-treated construction, it provides long service life, stable performance, and resistance to deformation under continuous load.

The spring features precision-finished ends that support smoother internal operation and better seating within the assembly. Its blued surface finish improves wear resistance and contributes to longer component durability.

This model is intended for builds using reinforced upgrade pistons, as the larger outer diameter may not be compatible with standard stock parts. When installed in a properly assembled and well-sealed air system, it can deliver performance matching the M150 category.

Features:

• upgrade spring for manual airsoft sniper rifles
• designation: M150
• approximate output: 150 m/s (500 FPS)
• material: spring steel
• heat-treated construction
• precision-finished spring ends
• blued surface finish
• outer diameter: approx. 12.8 mm
• designed for reinforced upgrade piston setups
• suitable for increasing power and effective range