PISTON SYSTEM Op Rod - Carbine Length

This Carbine Length Op Rod for the Piston System is made from H-13 tool steel which is machined and nitrided (polished stainless steel in appearance) to Superlative Arms specifications.  Op rod and spring included.  

NOTE: The spring is not required to safely operate the piston system. We do not use these springs on our personal builds, military or law enforcement builds. We have done a 10,000 round torture test without the op rod spring resulting in zero failures. This is just a mag release spring that helps eliminate the small amount of rattle the op rod has inside the gas block. This spring will fail at a certain point and will need to be replaced. You should inspect your spring after each use if you choose to use it.