The K31 Spring is compatible with dozens of blasters. These are identical to the ones from McMaster, except I have had these custom ordered, and they have flat/squared-off ends for a better install experience. This means that even after cutting the spring, you will have one flat end, making installation easier!
FEATURES:
• K31 spring with squared/flat ends
INCLUDES:
• 1 K31 Spring
PERFORMANCE:
Average FPS (Standard Deviation)
• 110 FPS in a Caliburn C4 with a 0.527 x 14in barrel
SPECS
• Material: USA-made spring-tempered steel
• Type: Compression Spring
• Dimensions:
Spring Gauge: 1.6mm (0.06in)
Length: 280mm (11in)
Outer Diameter: 19.8mm (0.78in)
Coils: 45.75
• Squared: Both Ends
LINKS:
• Other Legacy Springs
• All Springs