I think you are talking about a Wilson Shok-Buff (?). If so, they are completely unnecessary and are just one more part to wear out and jam your pistol. Change your recoil spring occasionally and this part, like very many aftermarket 1911 add-ons, is totally irrelevant.
After all, the 1911 managed to work for about seventy years before the Shok-Buff was invented.![]()


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