This is a new Fusion Barrel Bushing for government sized pistols and clones. It was made a bit larger at the critical contact points to make a tight fit with the slide and barrel, some fitting may be required. All machined in the USA on state of the art CNC turning centers. All machined from pre-hardened bar-stock. Absolutely no warping or distortion from after machining heat-treat processes. All made in the USA.