Worker Mod Modification Upgrade Spring Sets for Nerf Rebelle Sweet Revenge and Zombie Strike Hammershot Blaster Toy

100% brand new and high quality. It can promote shooting range and dart speed. Notice: This kits need some installation skills, so it is generally suitable for people over 20 years of age. This spring is only for Nerf Blaster toy,All parts are separate,and the product included small parts, you need to install and assemble your blaster,Please be careful installing the parts to avoid damage to your Blaster! Blaster not included!, Manufacturer: Worker Mod