The Blasterparts Nerf XD Modulus IonFire Spring provides a 7kg spring that improves range and velocity by 30-40%
FEATURES: • Compatible with Nerf XD Modulus Ionfire Blaster
SPECS: • Equivalent mass of spring: 7kg • Firing range increase: About 40% • Muzzle velocity increase: About 30% • Difficulty level of spring installation: Moderate
