![M110 Main Spring M110 Main Spring](https://air.viruisis.lt/4995-large_default/m110-main-spring.jpg)
M110 Main Spring
A steel spring with an unequal stroke designed for power tuning. It provides a muzzle velocity between 350 - 380 FPS (depending on the internal gearbox parts used). The fronts of the spring have been ground, which translates into its better operation.