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304 Posts
I have the SS DUAL spring from the Glockstore in my G19/4th Gen. No issues, no difference in operation I can discern. Likely I wasted money, but that setup DID make a difference in my Ruger LC9, so I tried it in my Glock. Maybe a physicist could explain why a difference in one but not the other... But from two different manufactures as well and two different types of assemblies.