Kronos XVIII-500 Blaster Upgrade Spring

Take your Nerf Rival Kronos XVIII-500 to pro-level performance with our precision-engineered spring mod. Crafted from premium piano steel, this upgrade delivers harder hits, longer range, and tournament-ready accuracy - giving you the edge in every Rival battle.

Why This Spring Upgrade Wins:

🎯 Tournament-Grade Power - Choose from 10kg, 11.5kg, or 13kg springs to match your playstyle (13kg for maximum competitive advantage)
⚡ Faster Muzzle Velocity - Shoots Rival rounds harder and farther than stock springs
🔧 Easy Installation - Includes all necessary o-rings for quick, hassle-free upgrading
🏆 Proven Reliability - High-tensile piano steel withstands thousands of shots without fatigue

What You Get:

✔ 1x High-Performance Spring (select your preferred kg rating)
✔ Installation o-rings
✔ Instant competitive upgrade

Perfect for: Competitive Rival matches, target practice, or just outclassing your friends. Transform your Kronos from stock to stunning today!