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Laylax Prometheus Non-Linear AEG Upgrade Spring MS90
Achieve consistent muzzle velocity and smooth mechanical cycling with the LayLax Prometheus Non-Linear AEG Upgrade Spring MS90. Precision-engineered in Japan using high-tensile oil-tempered steel wire, this premium main spring features an irregular pitch (non-linear) coil design that reduces initial motor load and gear stress during gearbox compression. Designed to produce an approximate velocity output of ~300 FPS (depending on barrel length and air seal efficiency), the MS90 spring delivers predictable compression, minimal tension decay over extended use, and exceptional cycling stability for low-to-mid FPS fields and CQB builds.
A high-quality main spring is the heartbeat of any AEG gearbox, directly dictating muzzle velocity, gear tension, and motor power consumption. The LayLax Prometheus Non-Linear AEG Upgrade Spring MS90 delivers world-class Japanese metallurgy tailored to provide smooth compression, prolonged spring lifespan, and reliable velocity output.
Irregular Pitch (Non-Linear) Design Advantage
Traditional linear springs compress with uniform resistance throughout the piston stroke, forcing the motor and gear set to overcome maximum resistance immediately upon pick-up. In contrast, the irregular pitch geometry of this Prometheus non-linear spring features unevenly spaced coils. The tighter coils compress first during the initial cycle phase, reducing initial startup strain on your motor, battery, and bevel gear. As the stroke completes, the broader coils store full kinetic energy, transferring smooth, linear force to the piston without bogging down your rate of fire.
High-Tensile Steel & Fatigue Resistance
Manufactured from high-grade oil-tempered steel, the MS90 main spring undergoes rigorous stress treatment to prevent tension loss over time. Standard springs often settle and lose FPS after high-volume skirmishing; Prometheus non-linear springs retain their structural integrity and length, maintaining tight shot-to-shot velocity consistency for thousands of cycles.
Ideal Output for CQB & Precision Setups
Designated as an "MS90" rating (yielding roughly ~290 to ~320 FPS on a standard 0.20g BB setup depending on cylinder volume, air seal, and barrel length), this spring is an ideal choice for indoor CQB fields with strict velocity caps, high-speed build setups, or UK/European site limits. Upgrading to LayLax ensures quiet, fluid gearbox cycles while protecting your mechanical internals from unnecessary torque shock.
Key Features & Technical Benefits:
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Non-Linear Coil Geometry: Reduces initial motor startup strain and gear teeth stress during pick-up.
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MS90 Rating (~300 FPS): Ideal power output for CQB limits, high-speed setups, and field compliance.
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Oil-Tempered High-Tensile Steel: Resists spring fatigue, sag, and FPS drop over long-term use.
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Smoother Cycle & Efficiency: Minimizes amp draw from your battery by smoothing out compression resistance.
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Universal AEG Compatibility: Direct drop-in fit for standard Version 2, Version 3, and quick-change AEG gearboxes.
Tech Tip: For the best results, pair this spring with a ball-bearing spring guide and ball-bearing piston head to eliminate spring torsion.
| SKU | 511737 |
|---|---|
| Brand | Laylax |
| Weapon Category | Parts |
| FPS | 201 - 300 |
| Spring Type | AEG |
Our courier partners deliver from Monday to Friday, excluding Bank Holidays. We will attempt to dispatch all packages within 24 hours, although at peak times this may take slightly longer. Orders with products with two-tone service or Defence Check may take longer to dispatch.
Once the order is dispatched you will get an email with the tracking number and which courier partner it’s going to be delivered via. Any missing/incorrect items need to be reported with 48hrs of signed delivery.
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The gun will be sprayed 51% in a bright/primary color (we do only blue, green and red currently). The process of two toning currently runs at 2 working days depending on Drying Time, which is effected by Ambient Temperature and Weather. and currently no express delivery is available for this even if you select it at checkout.