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
Great mod for the viper. Makes it hit hard for such a small pistol
A must have if you purchase the viper 200..... It gets your bl
Absolutely love the upgrade, darts fly faster and farther than they use to, also pretty easy to install
