Worker Mod 7KG Modification Upgrade Spring For Nerf N-strike Elite Retaliator 7KG Modification Upgrade spring For Nerf N-strike Elite Retaliator 100% new brand and high quality Make your Nerf N-strike Elite Retaliator more powerful with this upgrade spring Please make sure the spring fit Nerf N-strike Elite Retaliator before you place an order Blaster not included.