FPS Spring sp 110+ (FPS110+)

The 110 m/s FPS spring has been calibrated on 363 mm barrels and gearbox with D-type cylinder (for 301 to 400 mm barrels).

Of course, with shorter or longer barrels, the performance will decrease or increase, so it will change to the harder or softer calibration.

The thickness due to the spring guide and piston head bearings was not taken into account in the calibration process. Therefore, with the same initial conditions, an increase in performance of about 2.5 m/s per bearing must be taken into account.

The FPS spring is 100% made in Italy and was created in collaboration with leading companies in the sector.