I thought I wanted the Briley bushing when I got my stainless e-series just over a year ago. I figured I could make it closer to a performance center for short money. So I tried reading up on it. But never found any significant info that would benefit me. So I started to loose interest in the idea. In the meantime I've put about 800-900 rounds through the pistol. Not one single issue. So I guess I really never needed the upgraded bushing.