Guarder SP150 Spring
Best high tension upgrade for experienced technicians seeking maximum power.
A reliable, high-consistency spring built from premium silicon-chromium alloy steel. It provides a stable foundation for internal upgrades, though final velocity will always depend on your specific build's compression and barrel setup.
$16.50
at
Brillarmory
Who it's for
- Sniper and DMR players seeking maximum range and power
- Tech-savvy owners wanting a reliable, long-lasting internal upgrade
- Precision shooters requiring tight groupings and predictable performance
Who should skip it
- Airsoft owners using standard, non-reinforced gearbox shells
- Casual players primarily visiting local fields with standard FPS caps
- Inexperienced hobbyists without specialized tools or quick-change spring systems
Performance breakdown
Material Durability
Silicon-chromium alloy steel ensures long-term resistance against fatigue and deformation.
Tension Consistency
Precise manufacturing minimizes velocity fluctuations across repeated firing cycles.
Installation Ease
Standard sizing fits most gearboxes, though requires moderate technical disassembly skills.
Power Output Stability
Provides a predictable FPS baseline for high-performance internal builds.
Compatibility Range
Versatile design integrates seamlessly with most standard AEG gearbox platforms.
Build Precision
Oil-quenched construction offers superior structural integrity compared to generic alternatives.
Key Specs
Material
Oil Quenched/Tempered Si-Cr Alloy Steel Wire
Spring Rating
SP150
Weight
0.13 lbs
Tension Rating
M150
Know before you buy
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