Prometheus MS135 – CRIMSON Tune up spring


  • MS135 Tune up spring – EMERALD
  • Approximately 443 FPS (0.20g BB)
  • Non-linear, irregular pitch design for less stress on your gearbox

1 in stock



Prometheus Airsoft

MS135 – CRIMSON Tune up spring



Prometheus Non-Linear AEG Spring Series Color Coded

  • Colored coded for easy identification of spring rates
  • Non-linear, irregular pitch design for less stress on your gearbox
  • Special coating to prevent paint flaking
  • Precision made in Japan


The spring of an airsoft gun is a basic part that affects the gun’s overall velocity (FPS・M/S) and ROF (cyclic rate). Additionally, LayLax’s non-linear spring provides the same great performance boost of traditional regular springs in addition to reduced stress on your gearbox and motor as well as easier compression. Not only does the non-linear spring alter your velocity and cyclic rate, but it increases durability as well!


MS spring rates are based on the rough meters per second on a 0.2g BB. E.G: You can expect roughly 100 M/S (328 FPS) on a MS100 spring. The M/S or FPS can vary considerably due to your entire build setup, so please keep this in mind when choosing your springs.



If you’re unsure and want to know more, email us Here.



Additional information

Weight .025 kg
Dimensions 8 × 8 × 3 cm


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