Unleash the full potential of your ASG KJ Shadow 2 or SP01 with the KJ Shadow 2 – Race Ready Upgrade Spring Set. Experience unparalleled performance with this comprehensive set that includes a precision-engineered hammer spring, recoil spring, and buffer spring. Designed for competitive shooters, this upgrade delivers a softer and faster recoil, allowing you to regain your sight picture quickly and efficiently. Optimize your shooting experience with superior material quality and expert craftsmanship. Ideal for serious competitors looking to gain an edge on the range. Available in standard size, the set's precision-fitting components ensure maximum compatibility and performance.