Sell Worker MOD Upgrade Spring for Nerf Rival Kronos best price

Worker MOD Upgrade Spring Coil design for Nerf Blasters powered by plunger mechanism. Bored to the stock weak dart shooting power? Mod your blaster with our spring coil to improve shooting range and performance. Be careful to select the correct model as your blaster, each blaster models make use of different springs size so we have done for you. Modifying the spring mechanism on your blaster does require a high level of modding skill, please be careful to read instructions online and we could provide support with youtube video showing how to make your blaster upgrade done. Disclaimer: Mod at your own risk! Increasing the spring tension can break or damage the stock internal components of your blaster. In addition, some blasters are extremely hard to reassemble, and we won't be able to troubleshoot problems due to user error.