Viper Upgrade Spring

Increase the FPS of your Viper blaster with this 1.7 Viper Upgrade Spring from ZWQ. This spring is also compatible with the Fire Rat.

FEATURES:
• Viper Upgrade Spring
• Boost the FPS of your springer sidearm
• Compatible with the ZWQ Viper and Fire Rat blasters

INCLUDES:
• 1 1.7mm Viper Spring

PERFORMANCE:
Average FPS (Standard Deviation) with the stock 160mm barrel
• 98 (4) FPS unmodified
• 159 (2) FPS with the 1.7 upgrade spring

SPECS:
• Material: spring-tempered steel
• Type: Compression
• Dimensions:
    Spring Gauge: 1.7mm
    Length: 130mm
    Outer Diameter: 20mm
    Coils: 10.5
• Squared: Both ends

LINKS:
• ZWQ Viper Blaster