NERF N Series Shadow Storm Blaster Upgrade Spring Mod

Supercharge your NERF N-Series Shadow Storm Blaster with our premium 4.5kg/7kg piano steel spring – the ultimate upgrade for serious Nerf warriors. Experience harder hits, longer range, and unbeatable performance with this heavy-duty replacement spring.

Why This Spring Upgrade?

🔥 Choose Your Power Level:

• 4.5kg spring: Perfect balance of power and ease of priming

• 7kg spring: Maximum firepower for competitive play

🎯 Performance Boost:

• 30%+ increased firing range

• Tighter air seal for better accuracy

• Smoother, more consistent shots

⚙️ Premium Build:

• Aircraft-grade piano steel construction

• Includes high-quality O-ring for perfect seal

• Direct bolt-on replacement

What You Get:

✔ 1x High-performance upgrade spring (your choice of 4.5kg or 7kg)
✔ 1x Precision O-ring for optimal air seal

Outgun your opponents – upgrade your Shadow Storm today!