Valken Battle Machine Main Spring M90 – Rifle Accessory
Optimize your AEG’s performance with the Valken Battle Machine Main Spring M90. Designed for moderate FPS output, this high-quality spring is ideal for indoor fields or builds focused on control, speed, and consistency.
Features:
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Genuine Valken Battle Machine upgrade part
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M90 spring rating for approximately 300–330 FPS (with 0.20g BBs)*
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Consistent compression for reliable velocity
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Durable steel construction for long-lasting use
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Compatible with most standard AEG gearboxes


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