The ZF-5 Series Spring Pack includes a maintenance set of commonly replaced springs for the 9mm MP5/ZF-5 platform. Compatible with ZF-5, MP5, SP5, MP5K, SP-89, SP5K, MP5SD and other 9mm roller-delayed blowback firearms. Made in the USA Includes: Ejector spring, 9mm firing pin spring, sear spring, 9mm hammer spring, 9mm trigger spring, 9mm extractor spring
