M150

∙ Guarder
∙ SP 150 Spring
∙ For AEG tuning

Spring force: 18.73 kg
Weight: 15 g
Shipping weight: 27 g

The most "colorful" spring. The color is not painted. It is hard-coated by special process. Calculated carefully by computer and test by 100000 times punching. Spring has been proofed that the length and force are still…