I was wondering, do bushings wear out? I'm sure they loosen over time. So the question is, how long do they last? How many bushings per barrel if they don't last, or one bushing per barrel? By they, I mean fit bushings. In theory, loose bushings work longer than fit? Let's define 'work' as combat accurate and reliable. Next question. Bull barreled 1911's. Since they don't have bushings and tighten up front via the oversized barrel and lugs (am I on the right track?), the question: is this system more reliable than a bushing? Longer lasting? I'm not researching to buy, just researching as a person interested in guns and their mechanisms. Thanks for the inquiry!