Standard springs for airsoft guns

Brand: Ultimate

Reference:  ULTIM048

Brand: SHS

Reference:  SHS0026

Brand: FPS Softair

Reference:  FPS-SRE-105

The 105 m/s FPS spring is calibrated in collaboration with Daniele Cimadoro of Terni Softair.  In the phase immediately following forming, the spring is stabilized in the oven at a temperature of 400 degrees centigrade for thirty minutes in order to optimize its duration over time. 

Brand: Poseidon

Reference:  PES-006