Viper Upgrade Spring

Out of Darts Verified independent store

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Increase the FPS of your Viper blaster with this 1.8 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 1.8mm Viper Spring PERFORMANCE:Average FPS (Standard Deviation) with the stock 160mm barrel• 159 (2) FPS with the 1.8 upgrade spring SPECS:• Material: spring-tempered steel• Type: Compression• Dimensions: Spring Gauge: 1.8mm Length: 130mm Outer Diameter: 20mm Coils: 10.5• Squared: Both ends LINKS:• ZWQ Viper Blaster Show more