Springs

100 m/s FPS spring has been calibrated on 363 mm inner barrel and gearbox with type D cylinder (for barrels from 301 to 400 mm).Of course with shorter or longer barrel the performance will decrease or increase, therefore the calibration will be harder or softer.In the calibration process has not bee..

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.100% MADE IN ITALY10..

100 m/s FPS spring has been calibrated on 363 mm inner barrel and gearbox with type D cylinder (for barrels from 301 to 400 mm).Of course with shorter or longer barrel the performance will decrease or increase, therefore the calibration will be harder or softer.In the calibration process has not bee..

■PROMETHEUS Non-Linear Spring●Non-linear, irregular pitched designed to ease wear and tear on your gearbox ●Easier compression, with less overall stress ensuring greater durability   ●Heat-treated for greater strength and consistent compression  ■The spring of an airsoft gun is a ba..