S686 Foam Dart Blaster Upgrade Spring

Supercharge your JH2031 S686 double-barrel blaster with this 6kg piano steel spring set, designed to boost range and firepower for more dominant shotgun-style performance.

🔫 Why Upgrade?

✔ 6kg Dual Spring Set – 30% more power than stock springs
✔ Enhanced Range & Impact – Shoots harder and farther
✔ Premium Piano Steel Construction – Built for longevity and consistent performance
✔ Easy Drop-In Installation – Comes with two springs (one for each barrel)

📦 What's Included?

✔ 2x High-Performance Upgrade Springs (6kg)

🎯 Perfect For:

• Close-quarters Nerf battles

• Shotgun-style blaster enthusiasts

• Improving stock S686 performance

• Tactical loadout customization

Note: Compatible only with the JH2031 S686 Double Barrel blaster.