FPS SOFT AIR 100 m/s spring FPS

The 100 m/s FPS spring was calibrated on 363mm barrels and gearboxes with a type D cylinder (for barrels from 301 to 400 mm).
Naturally, with shorter or longer barrels, performance will decrease or increase, so you will switch to harder or softer calibration.
The thickness due to the bearings of the spring guide and the piston head was not taken into account in the calibration process.
For this reason, under the same initial conditions, an increase in performance of about 2.5 m/s for each bearing must be considered.
The FPS spring is 100% Made in Italy and was created in collaboration with leading companies in the sector.
The material used is blued and pre-tempered carbon steel wire with added silicon and chromium EN10270 / 2.
Immediately after forming, the spring is stabilized in an oven at a temperature of 400 degrees Celsius for thirty minutes to optimize its durability over time.
The spring has variable pitch coils in the central area and in the area in contact with the spring guide and undergoes a grinding process at both ends which ensures optimal performance during compression.
The product dimensions are:
- length: 170 mm
- outer diameter: 14.30 mm
It is recommended to use the spring in conjunction with bearing spring guides and piston heads to ensure maximum performance and durability over time.