K25 Spring For Rival Helix XXI-2000 Blaster High Power Mod Upgrade Toy Gun Part
K25 Spring for Helix Blaster - High Powered K 25 Coil Spring Mod For Nerf Helix XXI-2000 Curve Shot Rival System - Toy Gun Part. This is a tested and verified Rival Helix Upgrade. Newly Cut K25 Spring with Ground Down Smooth Rounded Ends.