OOD Rush 40 Spring
The OOD Rush 40 upgrade Spring increases the FPS of the rush 40 increasing its potency in games. This spring is an OOD exclusive and is made of stainless steel.
• Compatible with Nerf Hyper Rush 40
• Zinc Coated Steel Construction
• Average FPS 138 Standard Deviation 1.6
• Material: Zinc Coated Steel
• Dimensions: mm
• Rush 40 Hop Up