Item # ZF5F06400 Compatible with ZF-5, MP5, SP5, HK94, MP5SD, and other full-size 9mm roller-delayed blowback firearms. Made in the USA Includes: Complete ZF-5 Guide Rod & Spring Assembly The ZF-5 Guide Rod Assembly is machined from high-quality steel and manganese phosphate coated for corrosion and wear resistance. Our high-cycle spring has been proven to exceed all of our test requirements, even after extensive use of high pressure ammunition in full-auto configurations.
