Pirani molla BASIC 125
NEW PIRANI SPRING BASIC 125
Springs made in Italy, with rectified and self-centering support surface, identifying spring force color. Anti-corrosion treatment, variable pitch spring Made of pre-hardened steel. The springs have been tested on VFC M4 modified with two bearings, normal stroke, 270mm barrel, hop up and 0.20gr pellets giving the values expressed by the spring