No, I'm NOT putting one of these recoil redux systems on a Vintage SxS. But, I am strongly considering putting it on my competition gun (a tool) because I have a really bad right shoulder that I had surgery on several years ago.....it's tough getting old, capiche? What do you guys in the know think about the Isis as compared to the other recoil systems. What I have heard it is made out of tough Delrin and because it is polymer, and not metallic, it is not heavy and therefore does not dramatically change the handling characteristics of the gun. Thanks for your opinion.