NERF Modulus Longstrike Blaster Spring Upgrade Mod

Transform your NERF Modulus Longstrike into a long-range powerhouse with our professional-grade 7kg or 9kg piano steel spring upgrade. Experience 30%+ more muzzle velocity and pinpoint accuracy that dominates the battlefield.

Why This Upgrade Wins:
🎯 Precision-Tuned Power - Choose between 7kg (recommended) for balanced performance or 9kg for maximum impact
⚡ Military-Grade Materials - Piano steel construction withstands 10,000+ cycles without fatigue
📈 Performance Boost - Achieve 20% longer range and tighter shot groupings
🔧 Complete Kit - Includes upgraded O-ring for perfect air seal and easy installation

Technical Specifications:
✔ Spring Options: 7kg (optimal balance) or 9kg (pro-level power)
✔ Material: High-tensile piano steel
✔ Compatibility: NERF Modulus Longstrike ONLY
✔ Includes: 1x upgrade spring + premium O-ring

Pro Tips:
• 7kg spring offers the best balance of power and blaster longevity
• Pair with upgraded seal kit for maximum air efficiency
• Perfect for sniper-style mods and competitive play