Point M140 AEG spring

M140-level tuning spring with irregular wire density for electric airsoft guns. The irregular wire density reduces the effects of compression and extends the service life of the spring. The M140-level tuning spring provides approximately 140 m/s (1.95 J) of power with a 0.20g bullet. The final power is also affected by, among other things, other parts of the weapon and the bullet weight used.