The ZEV Tech Stainless Steel Guide rod has all of the same features our popular Tungsten Guide Rod with the exception of the recoil dampening found in the heavier weighted Tungsten. If you are in search of a steel guide rod for the added reliability over the factory stock polymer part with the ability to change spring weights, this the guide rod for you. The guide rod can be run captured or uncaptured. Various lengths available for compact, small frame, large frame, and long slide Glocks. The ZEV Stainless Steel Guide rod is compatible with the Gen 4 Glock with the use of our 4th GEN guide rod reducing ring.