FPS FPS M100 (100m/s) Steel Spring for TM NGRS
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The 100 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 ITALY
100% COMPATIBLE MARUI