These S400 Springs are all the current compatible springs available to tune the performance of your Zhen Wei Qi S400 Zebra Blaster. The S400 is an impressively compact and powerful springer. This selection of springs offers a range of options to fine-tune your blaster's performance. 

FEATURES:
• S400 Zebra Springs
• Upgrade springs for their new bullpup springer
• Fine-tune performance and consistency!
• Simple install
• Compatible with ZWQ S400 Zebra only

INCLUDES: 
• 1 Zebra spring of your choice

PERFORMANCE:
Average FPS (Standard Deviation) with included 448mm barrel
• 61 (8) FPS with the included 1.2 spring
• ~190 FPS with a 1.5 spring 
• 232 (9) FPS with a 1.6 spring 
• 302 (3) FPS with a 2.0 spring 

Click here for a complete list of tested performance averages!

SPECS:
• Material: Spring-tempered steel
• Type: Compression
• Dimensions:
     Spring Gauges: 1.6, 2.0mm
     Length: 300mm
     Outer Diameter: 19mm
     Coils: ~27
• Squared: Both Ends
• Weight: 16g
• SKU: NEW ZWQ S400 SPRING

LINKS:
• ZWQ S400 Zebra
• Compatible Darts
• Compatible Barrels
• More Zebra Mods + Accessories