NERF Strongarm Dart Blaster Spring Upgrade Mod

Tired of weak shots? Transform your NERF Strongarm blaster into a high-performance beast with our professional-grade spring upgrade! Choose between 4.5kg or 6kg tension to dominate the battlefield with harder hits and longer range.

Why This Upgrade Wins:
💥 Dramatic Power Boost - Up to 6kg spring force for 30%+ more firing power
🎯 Pinpoint Accuracy - Consistent spring tension means tighter shot groupings
🛡️ Premium Piano Steel - Won't wear out like stock springs (5000+ shot lifespan)
⚡ Easy Installation - Drop-in replacement (basic modding skills recommended)

Tech Specs:
✔ Spring Type: 4.5kg or 6kg (select your preferred power level)
✔ Material: High-carbon piano steel
✔ Compatibility: NERF Strongarm blasters only
✔ Includes: 1x upgrade spring

Pro Tip: Pair with upgraded catch spring for maximum reliability during rapid firing!