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AKA M870 Blaster Upgrade Spring 1.5mm
AKA M870 Blaster Upgrade Spring 1.5mm
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$9.99 USD
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$9.99 USD
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Unleash your shotgun’s full potential with this high-tension piano wire spring, engineered for aka m870 (R1/R2/R3) and ZS M870 models.
✔ Brutal 1.5mm Thickness – Maximum power for outdoor play
✔ Anti-Fatigue Design – Holds tension 3x longer than stock
✔ Non-Linear Coiling – Smother pump action with hard-hitting shots
Why Upgrade?
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+30% FPS over factory springs
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Eliminates weak/sagging spring syndrome
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Essential for competitive shotgun builds
Package Includes:
1x Silver Piano Wire Spring
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