Worker Swift & Harrier Upgrade Spring 1.6×300

Unlock your blaster's true potential with this high-performance steel spring upgrade designed specifically for Worker Swift and Harrier foam dart blasters. Experience professional-grade power with an 80-90 FPS increase that will dominate the battlefield.

Key Benefits:

🔥 Massive Power Jump - Achieve tournament-level velocity (80-90 FPS gain)
⚙️ Precision Engineered - 1.6mm steel wire construction for maximum energy transfer
🎯 Guaranteed Compatibility - Perfect fit for Worker Swift & Harrier platforms
🏆 Competitive Edge - Outrange standard blasters with ease

Technical Specifications:

• Material: High-tensile steel

• Wire Diameter: 1.6mm (optimal balance of power and durability)

• Dimensions: 300mm x 11mm (perfect fit for Swift/Harrier systems)

• Package Includes: 1x Worker 1.6×300 spring

Pro Tip: Pair with sealed breech and barrel upgrades for maximum performance!

Why Choose This Upgrade?

✔ Noticeable difference from first shot
✔ Maintains reliability - won't wear out like cheaper springs
✔ Simple installation - drop-in replacement for stock spring

Warning: May require upgraded catch spring for heavier loads. Not recommended for stock internals.

Dominate your next Nerf war - upgrade your spring today!