Main spring M170
A steel spring with unequal pitch designed for power tuning. Provides muzzle velocity between 550 - 600 FPS (depending on the internal gearbox parts used). The fronts of the spring have been ground, which translates into better work.
$5.72
Main spring M170—
$5.72
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
A steel spring with unequal pitch designed for power tuning. Provides muzzle velocity between 550 - 600 FPS (depending on the internal gearbox parts used). The fronts of the spring have been ground, which translates into better work.
